Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8d2b06f177b11f…

MALICIOUS

PDF

72.4 KB Created: 2021-04-02 08:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7f4c6f97b1e46d04de1c157acd11907c SHA-1: de68545a2e37855377c9cd5f8abe3b58084c6e05 SHA-256: 6e8d2b06f177b11fb9c932f15739970658e325d5125982aa2d94c9981c3e85dd
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 0.9993

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://zajinet.ru/123?utm_term=barracuda+ssl+vpn+client++mac PDF link annotation
    • http://begetus11ppz.xyz/zarosironisanozidali6b3.pdfIn PDF document text
    • http://investmag.org/13463084736ba97i.pdfIn PDF document text
    • http://niginotan.22web.org/food_handler_certification_exam_answers.pdfIn PDF document text
    • http://boost-shop.xyz/att._net_email_setup_androidz1x12.pdfIn PDF document text
    • http://itrom.fun/logo_design_book7fgsf.pdfIn PDF document text
    • http://tipografiyav.moscow/brochure_flyer_design_template_freem81jl.pdfIn PDF document text
    • http://fredo.run/disdain_crossword_puzzle_answero3xbo.pdfIn PDF document text
    • http://fasad-dom.site/98334209299ch27i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rogokumopukizu.epizy.com/jumogonuzirusekas.pdfIn PDF document text
    • http://sutuvufekejute.epizy.com/kaththi_aathi_song_in_english_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dca5ac27-1471-4af7-b73e-e2882fc59ceb/which_is_the_best_audio_bible_app.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/gabibub.pdfIn PDF document text
    • http://ribaxekag.epizy.com/dependent_and_independent_clause_quiz_with_answers.pdfIn PDF document text
    • http://rozugok.epizy.com/i_c_t_ka_full_form.pdfIn PDF document text
    • http://turekifutuku.epizy.com/bapanagotilisenowonito.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/sepamupizudivesixit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c89b744-5fb3-4bce-9203-a215370995a2/viribapalijojokofuwuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c92b1c-35f3-41c2-af08-cdd16f70ca49/31349454288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023d9ff9-f11b-488f-a4bb-ba2ab5aeb356/wokififekejugos.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/force_and_motion_worksheets_9th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b6417b9-ba0e-4baa-afd9-4cbdaf9c009a/23054049094.pdfIn PDF document text
    • http://wamitut.epizy.com/hepatitis_autoimmune_guidelines.pdfIn PDF document text
    • http://jigopikuxulet.epizy.com/anxiety_adalah.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_off0000dc1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1D 5328 bytes
SHA-256: 067875ceab2760685793d7f3ba634c0621cb624bb877f6d00c07747bf0acf671
font_01_sfnt_off0000ee2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2C 10576 bytes
SHA-256: 270c9f13a485bc30beddc8b7ecc1d66b35b0923584cf6ceafdbdda2ba2f3cfc7

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