Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4dab78e4de7f13…

MALICIOUS

PDF

62.8 KB Created: 2021-01-08 17:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 3c31da71a5dc18f234decebbfe6c4d6f SHA-1: e1538354af699b067dbf73f49abf63b6a39894a9 SHA-256: 7a4dab78e4de7f1390e817618aaf7a80980624df9aae10efe99f0ccb2999aacc
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely part of a phishing or scam campaign. The document body, though heavily obfuscated, appears to reference a product, suggesting a lure for a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/aws?utm_term=rael+collagen+facial+sheet+mask PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471085/normal_5fba444a50c49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479906/normal_5ff0e8945961e.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/jjLjdHL/nwn_cleric_fighter_weapon_master.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5fb689c93afb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367950/normal_5ff5b4a5f1c21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486351/normal_5fa83f8ecb318.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/Mjaiagg/84810706536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f978be462a7e.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/ijgicaa/destiny_2_lunar_battlegrounds_location.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5faf43adac0fb.pdfIn PDF document text
    • https://cdn.sqhk.co/mibajufaneja/ghClvJ5/trending_hashtags_for_instagram_likes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbe20ab6-acd3-4763-b5f0-2fa746c0e461/fejaxiloleretawuviraje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ef3c97-8b71-4dd1-80b5-bb69e8898668/modagavilud.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_off0000bb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB33 5268 bytes
SHA-256: d97abc888cb0064d37d1cca70c9ac89691ee8e986d09e599f740de61e706ebe9
font_01_sfnt_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 9752 bytes
SHA-256: 1b329977955aef5a7ab2bef6506fec36964e63ff11bdd3c8901755b9493a90a4