Malicious PDF — malware analysis report

Static analysis result for SHA-256 38094751dec00675…

MALICIOUS

PDF

65.3 KB Created: 2020-11-16 19:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b1b5aee12fd4cfb6104f48cd354670c0 SHA-1: 9206df8ac2816ef9891d8126acfdeb20724634a8 SHA-256: 38094751dec00675b044f5d1a8b9decbcbda232da6389a61e2ef4a4e8bc0ee15
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 0.9979

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://traffset.ru/123?utm_term=nerf+night+finder+mod PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373985/normal_5f932870e7955.pdfIn PDF document text
    • https://lerexujirizafet.weebly.com/uploads/1/3/4/3/134344290/wupen-xezulowomenu-sapowimijel.pdfIn PDF document text
    • https://jidamusalaf.weebly.com/uploads/1/3/4/3/134378250/358b4771f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_5f9309f3ab360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f89aa5fedade.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/d96ddb407408.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/2340c015-24ec-42d8-82f7-d4d086d994ca/945632029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f3f3767-a605-4b8a-b2c4-0005b480878c/lady_gaga_bad_romance_lyrics_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3387af28-db13-4b48-a1bf-9d785c1c0096/31689856756.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_off0000c502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC502 4872 bytes
SHA-256: 050d67352701c71ab872761d18b9e023003f1bf03235e1ca4a351a966b834206
font_01_sfnt_off0000d570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD570 10680 bytes
SHA-256: 2d7803e47e4755f1c8c745bf5d02a7ca79507b292ed91ba57aa27296067e229d

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