Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e7087b6e6c34ff…

MALICIOUS

PDF

94.2 KB Created: 2021-03-28 09:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 05cb83ba731c41beb1797c98b646b00b SHA-1: 2dd30c8d6b1f6fa6c7d7777634720fe3f264beb6 SHA-256: f3e7087b6e6c34ff30bc8bdb83fdb1b74957e43d3067a574589d48369b981b73
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://jumiwimov.ru/123?utm_term=arietta+dekor+glass+range+hood+manual PDF link annotation
    • http://towumodoxilokox.22web.org/37400326262.pdfIn PDF document text
    • http://babarogumo.iblogger.org/historia_de_mexico_ii_libro.pdfIn PDF document text
    • http://zuvipimaduv.iblogger.org/32308866148.pdfIn PDF document text
    • http://wiinorama.website/xoloxosekowuzevome1nz94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461485/normal_60034116eb2a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_60508e3f36132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475985/normal_603bfde7ba78c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423430/normal_5fce9104bbab8.pdfIn PDF document text
    • http://datujizid.iblogger.org/hockey_world_cup_2018_anthem_song.pdfIn PDF document text
    • https://jegasujarirulif.weebly.com/uploads/1/3/4/7/134720127/4914c34.pdfIn PDF document text
    • https://mawobomogagot.weebly.com/uploads/1/3/4/1/134109187/643de84992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_6023d827b8bd1.pdfIn PDF document text
    • https://xodajozazav.weebly.com/uploads/1/3/5/3/135305433/veworesutuz-zizifigagudog-tuwonekawup-dalokagasinelax.pdfIn PDF document text
    • http://cartest.pro/emergency_care_13th_edition_workbookb3rwr.pdfIn PDF document text
    • http://jipososuwo.iblogger.org/fuxesexegen.pdfIn PDF document text
    • http://nadozigipak.22web.org/android_auto_2016_mazda_3.pdfIn PDF document text
    • https://kebiluxo.weebly.com/uploads/1/3/1/4/131455508/jujalavoxil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxinubisiwu.rf.gd/food_is_good_for_the_soul_quotes.pdfIn PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_e96dbc5ee1e34781a933c8ee69b44b31.pdf?index=trueIn PDF document text
    • https://6d706a39-1f93-4f1a-9423-caccf7e65e71.filesusr.com/ugd/69f91f_3ed720e737dc42cbb9abac66a3ea38a4.pdf?index=trueIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_773e96daa0f94974ac9de144e17d3d7a.pdf?index=trueIn PDF document text
    • https://c6506652-bf5e-4f52-be36-03dbfaede22c.filesusr.com/ugd/f74919_0f985448b79243f081445febb8d6441b.pdf?index=trueIn PDF document text
    • http://woloruvikato.rf.gd/76063176842.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_off00012f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F61 5292 bytes
SHA-256: a9c0e25457ef730b64dcc63860d9dc2b0dd13e0c855f820a9b2b6e2b3cd75c5c
font_01_sfnt_off00014134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14134 12932 bytes
SHA-256: 8bae20172d424cd288210c322da7a69b7087104dccab63739352cca00a454e8c

Open this report in the interactive analyzer, or submit your own file for analysis.