Malicious PDF — malware analysis report

Static analysis result for SHA-256 05557fa09c318948…

MALICIOUS

PDF

76.1 KB Created: 2021-05-19 09:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: df863bc4116512ef8415823e71d0597d SHA-1: 12650591838c9ec54f735fc3b64e20ab67db6c8c SHA-256: 05557fa09c318948135b82dcf73a60d414ed1515472119779c887bc1ee39a781
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 0.9997

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://xezojetit.ru/strik?utm_term=kali+linux+full+hacking+tutorial+pdf PDF link annotation
    • https://bipilebel.weebly.com/uploads/1/3/1/6/131606150/vaxezidanijiluk.pdfIn PDF document text
    • https://xiluxobafuju.weebly.com/uploads/1/3/5/3/135323992/1086591.pdfIn PDF document text
    • http://rewutudot.iblogger.org/bookman_old_style_google_font.pdfIn PDF document text
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/1327145.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/6223481.pdfIn PDF document text
    • https://fibadajemuda.weebly.com/uploads/1/3/2/3/132303382/6948927.pdfIn PDF document text
    • https://dasajusowerav.weebly.com/uploads/1/3/1/6/131637273/8511408.pdfIn PDF document text
    • https://subefivu.weebly.com/uploads/1/3/4/6/134688636/220990.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/1de24219-96f8-46bf-8090-d72306af8f17/how_to_install_sims_3_expansion_packs_on_origin.pdfIn PDF document text
    • http://dolozezipido.rf.gd/personajes_del_doctor_zhivago_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9a19334-957b-46cc-8619-3c1b4dccf456/vojexekazomemurerasaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e08c26d-d5f6-47df-8666-865f104e9567/ethics_and_the_limits_of_philosophy_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d204e6fb-bc33-44bc-9933-a8fc4f7bb170/does_one_of_us_is_lying_have_a_sequel.pdfIn PDF document text
    • http://pemukusa.epizy.com/jibiletawav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd7c3adc-cbc3-4a89-b2f1-7b9ed6495c09/46844057144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e02a71d-e990-4554-9bfd-66078d8ca37b/power_electronics_engineer_jobs_chennai.pdfIn PDF document text
    • http://ratazudawi.epizy.com/school_subjects_worksheets.pdfIn PDF document text
    • http://minawibuwo.rf.gd/imperialismo_en_africa.pdfIn PDF document text
    • http://gepuxaxevo.rf.gd/teraz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73b0d87-ba60-4b1a-a226-fe562c34d5d1/duralast_700_amp_portable_battery_jump_starter_review.pdfIn PDF document text
    • http://labinugekifuv.rf.gd/quotation_template_xls.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED76 5340 bytes
SHA-256: e70d2ed660fe34c5d8495c3f8d8f0de63375a7e31b0b3a73fec440dded9c6f53
font_01_sfnt_off0000ffa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA4 10468 bytes
SHA-256: 7c2aa045d52813ac81bbf1d9449dfb8b1fbcadf693857334691f35a92e974163

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