Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ddcbdea96dd3660…

MALICIOUS

PDF

69.7 KB Created: 2021-02-11 00:34:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 53bcfffbd5a215a638e0c8e813a7c1ad SHA-1: d8abc40d09e1a3770f9d96d6afeffc67e6df24ac SHA-256: 9ddcbdea96dd3660b8c9da1d1a6dddefd91301a8c2b91cf8da0fbab2ee95082f
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'baarspo.ru', which is likely used for phishing or to serve a malicious payload. The PDF structure and embedded content suggest it's designed to trick users into visiting this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=grand+theater+winston+salem+north+carolina PDF link annotation
    • https://cdn.sqhk.co/vexorikodo/A3Cjfjg/english_reading_comprehension_practice_exams.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465012/normal_5ffe6bd79de3a.pdfIn PDF document text
    • http://martans.space/91061813606z9aok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_6023de6bd747c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369793/normal_5ff170c061364.pdfIn PDF document text
    • https://cdn.sqhk.co/luxanimev/2YOWs59/police_pursuit_policy_queensland.pdfIn PDF document text
    • http://0fruits.space/assistive_technology_assessment_form_ndis5q2r5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5fcfe47d906e8.pdfIn PDF document text
    • http://gladkoe-telo.xyz/6947740128nlgj1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_600d41878cf0d.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/gowebabuxogiro/50833065719.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/kilanabetorubovekolo.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/bosurefomazigosobibomiwoj.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/latuwelix.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/15427422502.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/47781845611.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/32140592094.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/bazaar_movie_full_480p.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_off0000d3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3EF 5300 bytes
SHA-256: 1edea563df639ec414548fb36a4c7fa06edc6897fb6b541fbfb471cf55ac5bac
font_01_sfnt_off0000e5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DE 10484 bytes
SHA-256: ae564476c192d3331c8eabd90d982e7ec230b35120c6378d8733ed7b2e095750

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