Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e23ed68cfa31d4c…

MALICIOUS

PDF

67.0 KB Created: 2020-12-21 03:34:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7e290cf3abb2270ec5dd679c07501242 SHA-1: 53acba6c802dde2676089ec4db8b78262b67d94b SHA-256: 3e23ed68cfa31d4c9a2bf84585698c6dca53b860a7451e1d16e8ecfc71289ea2
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-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://trafftec.ru/aws?utm_term=affiches+parisiennes+formalit%25C3%25A9s PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fd630fbe5a50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488574/normal_5fb79f516b720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_5fba0618f2927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f8e2c8533fdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f87dee5edf01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413242/normal_5fd8698149b40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5fa1c784856ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdf26872eab2a0c45f5b60f/t/5fdf61922629b066abc8f78c/1608475030843/35565155313.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/fnaf_apk_mod_unlocked.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/air_pollution_caused_by_industries.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a00326eb-3451-428e-ae03-06204f74347c/vatadigexume.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/57759330400.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67f67ab79f442f2500a09/t/5fd75091313c42342baa0637/1607946388509/lozix.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_off0000c45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC45C 5388 bytes
SHA-256: 8076190b3ef1175333587a5ece43eaee40c5a01d9951a9470e7e3d8706597688
font_01_sfnt_off0000d645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD645 12344 bytes
SHA-256: 7ceb40a3a98c380719a45a360a425002e0adb3500c448d4a498669dd5fb3f5ba

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