Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17e13de05acf626…

MALICIOUS

PDF

94.1 KB Created: 2021-02-28 05:26:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f2ab59381aade4dabd2f34690c0f1744 SHA-1: de56a576548afed63fdaa151bd4fd24bc39cbdb8 SHA-256: e17e13de05acf6266d03343417a94d47a0cb41f57986864572cd95fe2ebca6e2
186 Risk Score

Malware Insights

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

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 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://botokaw.ru/123?utm_term=hoover+washing+machine+repair+help PDF link annotation
    • https://tefuledajejus.weebly.com/uploads/1/3/1/4/131437322/9306245.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/hqghidH/film_quote_quiz_buzzfeed.pdfIn PDF document text
    • http://reduslimitaly-official.site/thyroid_treatment_guidelines_uk1zv38.pdfIn PDF document text
    • https://joweralifaj.weebly.com/uploads/1/3/4/3/134350132/nuxobode.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/hogejcn/yes_we_coupon_reviews.pdfIn PDF document text
    • http://mananeje.66ghz.com/friction_loss_in_a_pipe_lab_report.pdfIn PDF document text
    • https://sawatulaboror.weebly.com/uploads/1/3/2/7/132710797/vonokogapan.pdfIn PDF document text
    • https://lenumerizak.weebly.com/uploads/1/3/5/9/135962539/2617564.pdfIn PDF document text
    • https://wavajonenavu.weebly.com/uploads/1/3/1/8/131871509/3017295.pdfIn PDF document text
    • https://cdn.sqhk.co/rowunozimop/ZXhf1hg/how_many_endings_does_simulacra_2_have.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/hehcEif/scalextric_slot_cars_ebay_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/mofisozulud/2Jhilhh/vesaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zokoximu.rf.gd/mokiramasusalugosigesu.pdfIn PDF document text
    • http://jenetaponolinev.rf.gd/kenmore_ultra_wash_dishwasher_instructions.pdfIn PDF document text
    • http://xavitubipuru.rf.gd/31584549351.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F2 5168 bytes
SHA-256: 0e4459eca7722f7785c934d6d22d7f5bddb7263c98cb01e4fd5b45500ce1dc1c
font_01_sfnt_off0001385c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1385C 10760 bytes
SHA-256: 053aa0bd8f00b3a28dcef9864f42d3e9365aa076aa02fffee6f2eae8f5ebfeb5
font_02_sfnt_off00015cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CFC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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