Malicious PDF — malware analysis report

Static analysis result for SHA-256 065b72dfe4f5ecc0…

MALICIOUS

PDF

78.1 KB Created: 2021-02-06 08:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 08f14e87cae534cb7341284ef7ee3600 SHA-1: d8ebe1c2d860bb3ae539c1b8e72f900ec7e5bb5d SHA-256: 065b72dfe4f5ecc0795ffdda901b3ff228d35de5323de385179dab20adc9eaa8
156 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ClamAV and an ML classifier, with heuristics indicating it contains a large number of external links, characteristic of a link farm. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious sites, disguised as a legitimate template.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/aws?utm_term=business+trip+itinerary+planner+template PDF link annotation
    • http://latuha.com/activador_office_2016_professional_pluse4ceq.pdfIn PDF document text
    • http://believes.space/call_simulator_slender_manhmgsw.pdfIn PDF document text
    • http://unlockdeals.shop/thermo_scientific_elisa_technical_guide_and_protocolsie23l.pdfIn PDF document text
    • https://tebeneka.weebly.com/uploads/1/3/0/8/130874559/7f3c8b14df4bdf.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/haggfFu/wrestling_revolution_world_fighting_championship_mod_apk.pdfIn PDF document text
    • https://jabekidedur.weebly.com/uploads/1/3/1/6/131636775/razolemajada-gitumuzedozofel-fuwapereb-mijifupik.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/id3pMjf/jirugodusasupizor.pdfIn PDF document text
    • https://novomuzedideb.weebly.com/uploads/1/3/1/4/131406537/295efe6659512f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/1974142719.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/benson_idahosa_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/suledikejalipu.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/be_safe_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/95818484534.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/pillars_of_eternity_damage_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/jezupozut.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_off0000f61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61F 5116 bytes
SHA-256: 38e23807e1ee00a76d87f450f71738839204fed7a99f310284ab5103a77d38bc
font_01_sfnt_off00010776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10776 10552 bytes
SHA-256: d7563d81b14ea2317884a704bc061e9b2160742baa1dcfe42cd098d0fde511e7

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