Malicious PDF — malware analysis report

Static analysis result for SHA-256 baac80130f63863a…

MALICIOUS

PDF

80.9 KB Created: 2021-04-29 13:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 569b6445b10c0f45a78616995ff37686 SHA-1: 404d309be5f1ceca85cddc94085abfa4ac398269 SHA-256: baac80130f63863ab46effb0f9a6d8724743105f1e7409c18592eba8e8e30d1b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains a large number of embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution campaign. The presence of external URI heuristics further supports this, indicating the document's primary function is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/strik?utm_term=how+to+use+singer+stitch+sew+quick+handheld+sewing+machine PDF link annotation
    • http://wirelessinfo.ru/pudomusadanuvejoq1xc.pdfIn PDF document text
    • https://cdn.sqhk.co/kewebogi/cchdjaq/tirogoxowewowoxudab.pdfIn PDF document text
    • https://zemapefim.weebly.com/uploads/1/3/4/4/134485651/rozesozepe.pdfIn PDF document text
    • https://kowexemi.weebly.com/uploads/1/3/1/8/131872048/5111811.pdfIn PDF document text
    • http://help-ruleviolation.com/best_photo_editor_free_android58u09.pdfIn PDF document text
    • http://mipasotul.22web.org/where_to_watch_guns_germs_and_steel.pdfIn PDF document text
    • http://openchambre.xyz/pubajevejkp4m.pdfIn PDF document text
    • http://djami.ru/xebewbhcw6.pdfIn PDF document text
    • http://logvoz.ru/how_can_i_fix_my_camera_errorjgdgw.pdfIn PDF document text
    • https://vavaxumepanev.weebly.com/uploads/1/3/6/0/136097425/lalavotexaja.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/MmPidha/icymi_meaning_slang.pdfIn PDF document text
    • http://myshoes.moscow/998478577898p5w7.pdfIn PDF document text
    • http://kneeksi.ru/4580820098182emy.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/hgnDIGd/wipuzonegaj.pdfIn PDF document text
    • http://citruss.space/18735645104276qi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tivigolinu.epizy.com/how_to_make_a_lego_water_dispenser.pdfIn PDF document text
    • http://tawegoju.rf.gd/fedumafik.pdfIn PDF document text
    • http://poposumezaxek.rf.gd/89489172058.pdfIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_ac8fd1e9492a450c805dec836f2a902c.pdf?index=trueIn PDF document text
    • https://368af19b-b9be-4417-8ea7-dfc4611f9fec.filesusr.com/ugd/abd4c0_7fd7646c609c4f2ea0ce98f3552dfc9c.pdf?index=trueIn PDF document text
    • http://fizidegomo.epizy.com/yelling_woman_cat_meme_template.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_off0000fbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD1 5596 bytes
SHA-256: f5ef2af6de33dcaf0669ac652ef739985ab698ad21b4776f1362f3bb96b9c23c
font_01_sfnt_off00010eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB4 10744 bytes
SHA-256: a38b95293caa8851d5fb3eae47ea7c2ddeeb980c5b19b8501288656b26368ea0

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