Malicious PDF — malware analysis report

Static analysis result for SHA-256 b901ee43c375180b…

MALICIOUS

PDF

62.3 KB Created: 2020-12-05 09:19:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3f4984dbafcc357544b2614c1a4d5db5 SHA-1: dfee085408ed71fe3bb8e01cfa20497d302547ea SHA-256: b901ee43c375180bf9fa175700cb70eb783ed2737ffbaa3dec54e2359b4f9d69
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gettraff.ru/123?utm_term=151+pokemon+quiz+deutsch In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_5f9046f78cc65.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/5711090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f99589a8616e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_5fa0b64e0906f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428062/normal_5fa88eb8beda4.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/5fc0d785085bf90c0efcc6ad/t/5fc1750afa04221c7156e0a7/1606513930297/zovemiri.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1e13da6d74665ac6b7e9/1606229524224/nizopenikuwa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49caa97599144eed739d/1606371787018/1923_morgan_silver_dollar_value_chart.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1be95e198d0a3864ac6f/1606228970233/itech_duo_watch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/furniture_row_columbia_mo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d12c3dfdd95b60d4a66f/t/5fc3816df3de5e49b5d12881/1606648174185/wujepawoxefomakajimepeven.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56b7140f1034a5cc72ee0/t/5fc757f8b2fa4660c8d27f81/1606899708891/xofoxotawivatarirode.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf03f6a371610b876487f/1606217793106/66460938292.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_off0000b365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB365 5296 bytes
SHA-256: 8677ebdaaf1e0ed81f8f8c4a67b33846fa49e45a88a7b8d072809a227ab5ea53
font_01_sfnt_off0000c55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC55D 11764 bytes
SHA-256: 2a1611203899061efbe698364544126eb151c77ad7a60cbc0985fd4c87704b05

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