Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6c27f886604b81…

MALICIOUS

PDF

76.2 KB Created: 2021-02-10 03:04:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8a8927edfc7b37437efef4d7b1c17a78 SHA-1: fbb367b1e057f0b83ab4cadf53ce244893648a53 SHA-256: 2e6c27f886604b814783753708534900eb8a87ac5b5a9c197e52f61d4546f2b3
66 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Breitling ab0110 user manual', likely to trick users into clicking on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/wb?keyword=breitling%20ab0110%20user%20manual PDF link annotation
    • http://usesalle.xyz/xexelogugidlw5ku.pdfIn PDF document text
    • http://fasad-dom.site/nelogovebanuniximnytlo.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiziluda/7heWUrk/dragon_ball_intro_song.pdfIn PDF document text
    • http://vagoneviwesum.66ghz.com/tutul.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/xigt3jh/play_triominos_online.pdfIn PDF document text
    • http://gelivebun.22web.org/bleeding_time_practical.pdfIn PDF document text
    • https://cdn.sqhk.co/vilomikov/cigbGgg/74000052145.pdfIn PDF document text
    • http://kersita.fun/configurer_boite_mail_aliceadsl_sur_android1orwt.pdfIn PDF document text
    • http://astrology-personal.online/children_s_beds_for_sale_gumtreelse5h.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/je2MjdE/poxaxikeraxuwuvofezaf.pdfIn PDF document text
    • http://tameeniraq.com/cartesian_plane_worksheetpe14v.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/e1ntihu/vofazudataki.pdfIn PDF document text
    • http://plsale.pro/1056558925985tya.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/Nw4hfgh/jefujuzawolituzuvagera.pdfIn PDF document text
    • http://ligovezedeje.iblogger.org/temojosuzupemobapiniki.pdfIn PDF document text
    • http://piredvizhnik.com/android_game_for_pcowib0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://febiked.rf.gd/91820850896.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE58 5388 bytes
SHA-256: 461230fa4fb113d9a5ba59a0522a245310c44193f3ad2295660c9f8a194c3124
font_01_sfnt_off00010097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10097 10284 bytes
SHA-256: 8317185b195b10738966a6f8f0a3148ec8cb635af67bd3f4944aab78d9efb6a0

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