Malicious PDF — malware analysis report

Static analysis result for SHA-256 d989a75fda930844…

MALICIOUS

PDF

69.5 KB Created: 2020-11-24 13:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ebdccb5ff9b64fbf5cee6bffbaf50c58 SHA-1: dea260141900e4cb431e3ed8f023a790d5f864a4 SHA-256: d989a75fda9308445f64134c7f32208933eddea9abe857bc5c17cba30d932ceb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffine.ru/strik?utm_term=hard+questions+real+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f873fe60448b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f8741e3a926c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f86f8ed8089f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fb2bf7ecc4ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5f8b1896dd178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5fa8d73187050.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/suxugipipolazog/89863535253.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/xojodonumifuluritu.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/schlemmertopf_clay_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ce76eaa-d9fa-4e63-9b85-13febf5a37e9/76713921369.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/esserville_community_church_norton_virginia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff976585-acd3-4928-bd6b-4d946fa1aa33/game_hacker_monster_legends.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/bsa_camping_merit_badge_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4e1832-0797-4726-ad59-04e22422f084/magoziziwudupemub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12c3209-4303-4bbf-8573-d24dfeecb79e/set_logonserver_force.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cdaccd-6357-4b1a-8d0c-864e9f1ef1f8/pfaff_sewing_machine_reviews_2020.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_off0000d4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C8 4996 bytes
SHA-256: 7d90bdf0d902bb4264412e7576da093dca9f8d48ab738006c4b2af7aa9ccde5c
font_01_sfnt_off0000e5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DE 10440 bytes
SHA-256: b1b1acfc67b5f327a4fbedd053aba60369437201edfa2bff62b36959a18a9cf8

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