Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6611fc8316752f2…

MALICIOUS

PDF

99.7 KB Created: 2021-05-21 05:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0f34709f06179a2218f1738b10b1f08e SHA-1: b4c4bd4113bf1329998ef042924e717c4b06f18d SHA-256: e6611fc8316752f266cc0ba2aad2966b79350739e5f7369d3f59f99e9709a773
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many pointing to SEO redirectors, suggesting a phishing or malware distribution attempt. The primary malicious URL identified is https://golowaki.ru/strik?utm_term=how+to+patch+pokemon+storm+silver, which is likely used to host malicious content or redirect to a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/strik?utm_term=how+to+patch+pokemon+storm+silver PDF link annotation
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/wejego.pdfIn PDF document text
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/4c09140ac7b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425737/normal_5fd225c8c43d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462368/normal_600aa330f2600.pdfIn PDF document text
    • https://pafajawu.weebly.com/uploads/1/3/2/6/132682051/xuvaf-zisufopobaso-bodiwuno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460476/normal_5ff89aae05ac8.pdfIn PDF document text
    • https://tixuguzuw.weebly.com/uploads/1/3/4/0/134096155/wogonorirenu_pasapitu_nedotijuti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481699/normal_606d236599a64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409998/normal_606ac3efcd965.pdfIn PDF document text
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/vagusedumot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8e5b7fa-c1b1-43d5-ab2b-5418c33e1ff1/8635914880.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/54447865977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa8d206-f32a-4642-b1fc-36d81821fa11/the_canterville_ghost_summary_chapter_wise_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/fedramp_controls_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/2565858171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33508f47-5b4a-464a-9fcc-827e3b7b90f3/earned_it_fifty_shades_of_grey_from_the_fifty_shades_of_grey_soundtrack_the_weeknd.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/hodder_education_gcse_biology_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/44262932433.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5cf238-90d3-4e29-ac37-b714edcb5360/does_fit_track_scale_work.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/76787926133.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/98086990484.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/70131268698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf755f9-30d8-44c6-a9ad-a67999a7d31e/can_i_mix_tp_link_powerline_adapters.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/kesasixaxirufolam.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B4 6796 bytes
SHA-256: f67803e4e176341da98217f5194f0c3d14b232342460290131367e6a281f8b1e
font_01_sfnt_off0000f797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF797 4660 bytes
SHA-256: 7ceca7c52e299e9c9c68bb8daec891f7de6d6ced132d63acf9867a7304de666c
font_02_sfnt_off000107e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 5348 bytes
SHA-256: e913ecdb042d02256e06b68147f86fbcc75b2067d6ab87336f41361985086130
font_03_sfnt_off000119f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F9 20952 bytes
SHA-256: d80b5fc1c935f16a9745b3d8381ed33f933a7e0041b7a8b58df3edec2ac11063
font_04_sfnt_off00013a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1E 14380 bytes
SHA-256: 8b557552cb1bf8a0eb13f4c00b18c5a193b82feedfc622706eca8d1f0b1c28ae
font_05_sfnt_off000168c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168C7 16548 bytes
SHA-256: bf15f92c86ab0fc2bd59781dc6434f81b413b03ee8292f276434115776400c1c

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