Malicious PDF — malware analysis report

Static analysis result for SHA-256 707322fe634d6c04…

MALICIOUS

PDF

73.2 KB Created: 2021-02-20 21:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1050877d60148bcdbc6e94211aa8cbd SHA-1: ca14a8d1aa783ae7f15b52d74d891c0d2dc2f5ea SHA-256: 707322fe634d6c0466f890b6482631b92d48b83639644eebda8b56188a602f9a
126 Risk Score

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=can+my+lg+tv+remote+control+my+soundbar PDF link annotation
    • http://modalidetefid.iblogger.org/corbettmaths_2014_answers_parallel_lines.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/fwkhdfY/88903606079.pdfIn PDF document text
    • http://hookup154.space/196838137043hjxn.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/2gixD5c/infection_fatality_rate_meaning.pdfIn PDF document text
    • http://remidisafenepi.22web.org/fraction_addition_and_subtraction_worksheet_grade_3.pdfIn PDF document text
    • https://lefesime.weebly.com/uploads/1/3/4/8/134882546/0a876.pdfIn PDF document text
    • http://bioforce-co.site/google_chrome_apk_for_android_version_4.4.2otd43.pdfIn PDF document text
    • https://cdn.sqhk.co/moleselofa/ibXr0Of/jetelowamuvawelajirunusu.pdfIn PDF document text
    • https://vejarava.weebly.com/uploads/1/3/1/0/131070596/jizikukegewodin.pdfIn PDF document text
    • http://esmoney.site/pages_to_automator5ubax.pdfIn PDF document text
    • http://noncomform.space/681153268436009v.pdfIn PDF document text
    • http://wuvozikeximufuk.iblogger.org/62047912655.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://mogerokefo.epizy.com/72624082645.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/68308519648.pdfIn PDF document text
    • http://defokovujeganuw.rf.gd/how_to_play_big_stack_poker_cash_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/togiramikexewodavufezu.pdfIn PDF document text
    • http://tajazeruviv.rf.gd/46183402426.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/86673558136.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_off0000d227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD227 5416 bytes
SHA-256: 05bc89aea50cfc0c3eb0485faf3932871a0a11360e63718382016e873c4a9d52
font_01_sfnt_off0000e487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE487 10888 bytes
SHA-256: 99ec77356005bbfbd4a50668df435ddc707de06522a2c90c5526c19b096a2452
font_02_sfnt_off0001099f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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