Malicious PDF — malware analysis report

Static analysis result for SHA-256 1afec861cfb48337…

MALICIOUS

PDF

81.2 KB Created: 2021-03-12 04:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 51262e8c85da927ac9b14b6a01bf6650 SHA-1: 94c639fa113ad248d689858021019c4aa4cc8952 SHA-256: 1afec861cfb483377e91f4806e3e084941741991e051630e2e690905009484e0
156 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 0.9990

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 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.
  • 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=the+end+of+dieting+by+dr.+joel+fuhrman+pdf PDF link annotation
    • http://1xbet-registrat.site/mountain_bike_tires_29_x_2._257fkuv.pdfIn PDF document text
    • https://finugerijit.weebly.com/uploads/1/3/4/7/134702994/9364359.pdfIn PDF document text
    • https://judexibegajojid.weebly.com/uploads/1/3/4/8/134885636/zojuwevipezib_pagejobe.pdfIn PDF document text
    • http://pedron.fun/nuwijewezagofqi0jt.pdfIn PDF document text
    • http://brumbum6.xyz/49456620019xk6ga.pdfIn PDF document text
    • https://gulufoge.weebly.com/uploads/1/3/0/7/130776817/zilujiji-mujagiduwase-piwowivujiv.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
    • https://s3.amazonaws.com/rujimidujek/lateral_lunge_proper_form.pdfIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_6706ca87b408488e80f20ecb98a1c4f6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vexeliku/a3_laminating_sheets_officeworks.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/99080088880.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/swot_template_keynote_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/hp_elitebook_folio_9470m_screen_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/19485301177.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/72375725449.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/3ds_games_free_for_citra.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/chrisye_cintamu_telah_berlalu.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/bbc_first_tv_guide_australia.pdfIn PDF document text
    • https://2cc3dcad-61c1-4442-8662-ca5be7cd8672.filesusr.com/ugd/71b93f_ae6b5b14589b4a4cbe892ed9d909b130.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/25034590656.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/56592699847.pdfIn PDF document text
    • https://d5aacb37-8766-4234-9cc8-c2ec3b911aba.filesusr.com/ugd/1e723b_240c5cf31b824bc7942524a9719052da.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fikuvine/kuxokodeguvowezuku.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/52328884219.pdfIn PDF document text
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_daf6e5efe3564a009a9f64fbe73d6c89.pdf?index=trueIn PDF document text
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_18ac3c7d55af4d288442daf408de75f5.pdf?index=trueIn 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_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 5460 bytes
SHA-256: acb464991b4f03058408ab893faa91c5bf75bda6eb4298ee92bcb2667f47f4af
font_01_sfnt_off000103cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CC 10660 bytes
SHA-256: 9e865af27c09d24511266dbcf5dccc5b7171395f3afc798f3d645e27664df093
font_02_sfnt_off0001286d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1286D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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