Malicious PDF — malware analysis report

Static analysis result for SHA-256 388e577992a1f1cb…

MALICIOUS

PDF

73.2 KB Created: 2020-11-28 03:50:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 46078fc61e5f7a40d7a6caa4d13e0358 SHA-1: 167e23cf4b62edd2a502852e1f51827aed615a19 SHA-256: 388e577992a1f1cbec6a98b0a1a3f983d1064ffba5962fbbdb1ca1288e636f48
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Cartoon your photo app for android', suggesting a lure to download or interact with a fake application.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/aws?utm_term=cartoon+your+photo+app+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474192/normal_5fb2ac2d5bba7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_5fad2fa08af0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f914bb64a76e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f8f863a4e64a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379723/normal_5fae9fe7e02c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5f8f4defc5968.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/ff9d88de-eb53-4974-a3cb-56dbce94effb/22038489563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1390cc03-75ec-4b9b-a7a2-44e42314fdae/76418316029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d61c6d6-0a4a-49bd-b304-fd4048fa50e2/rigefolezowokesubewiwalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e64158-c77a-446e-bf6e-f4646239ccab/miwibesetipil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73671f8a-16e8-470b-a722-7c8cc5e01512/26756639516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50028ea2-c426-468e-9fec-3507635312ad/waguzumekakir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/539c9a8c-cd5d-4e5b-acb9-a8d2bbfbbce8/96074798155.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_off0000e429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE429 4928 bytes
SHA-256: 3aa2c5632225a2f9ba327cc24002dfb6dae76ea084e27fc40702ae51549e8e20
font_01_sfnt_off0000f4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F2 10240 bytes
SHA-256: 1e509507189a113b37e6bebc7dd916a04efa9b71caccfd14cb2fd3f0eb08b32f

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