Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb485719a4025c0d…

MALICIOUS

PDF

80.3 KB Created: 2021-04-06 03:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 178c1610b50cab10c48856a47761cbe9 SHA-1: b04fb04770da146629075ca2a11c504a74ee4f7f SHA-256: eb485719a4025c0da696cde6cb935080a37d47b555d33375fbfe22063547f892
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=what+is+movement+patterns PDF link annotation
    • http://tramlaweq.online/keurig_2.0_k450_single_serve_brewernvyvw.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/pilodiwenije-nebowodunape-vitezugesagituf-sovukef.pdfIn PDF document text
    • https://xidokuwu.weebly.com/uploads/1/3/1/4/131453793/1e954.pdfIn PDF document text
    • http://kozlo.space/xugesindkhzj.pdfIn PDF document text
    • http://triple-doska3.club/what_is_the_united_nations_doing_about_human_traffickingn857k.pdfIn PDF document text
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/a08053.pdfIn PDF document text
    • http://trysoda.club/why_does_my_dyson_v7_keep_pulsing7w6ud.pdfIn PDF document text
    • https://dunelakanova.weebly.com/uploads/1/3/1/4/131410870/4633636.pdfIn PDF document text
    • https://pifujikis.weebly.com/uploads/1/3/4/8/134875168/jonoruzos.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/keban89moe.pdfIn PDF document text
    • http://knitfqph.site/tosewep4ewsy.pdfIn PDF document text
    • http://masajsalonunuz.com/is_accu_chek_performa_discontinued2dcbk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcbee934-d6ad-40ae-aaa9-f9a45753597e/52698104830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de61c554-41ac-4942-b916-7a188038bfbc/bosch_silence_plus_dishwasher_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0222f4da-1c9c-43e2-ad68-7d5db6acecb0/what_is_the_difference_between_dyson_cyclone_v10_absolute_and_animal.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/coreldraw_x7_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/ditok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8243341-fe0b-40f9-bc3d-d244e36d3eb5/pentair_intelliflo_variable_speed_pool_pump_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/bugufarikex.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A5 5100 bytes
SHA-256: acc5373efa0d2f7e5ef53b6c871f9e6f789321d312ae21544d25ba09513ae1b4
font_01_sfnt_off0000f7e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E2 10732 bytes
SHA-256: 290e08d19d491954eed7a143b7448e407996539f9b8720691baba1a200834b19
font_02_sfnt_off00011cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF1 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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