Malicious PDF — malware analysis report

Static analysis result for SHA-256 569627357045a6b3…

MALICIOUS

PDF

71.0 KB Created: 2020-11-14 05:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0065aad04abc7784c59de37f8fa5016e SHA-1: e1ef61476940b11e69263809a440b8b72bbcc4b6 SHA-256: 569627357045a6b30e83783578e7e4924de3dd3fcfeee90cd2328aaf5cc346f7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=baixar+livro+historia+de+israel+no+a In PDF document text
    • https://lapamijivosesez.weebly.com/uploads/1/3/4/5/134507295/mupesesomadavujima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_5f8dfaf9efab8.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/787365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_5faf3ebf87344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409992/normal_5f93e59d0aa87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5f9f6a722a659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419425/normal_5fa9736500ca1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5fa49ead37fcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f8969b015f5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/379c4af3-6219-4cbb-a432-0761edd7bbac/skip-bo_rules_discard_pile.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/16151914571.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/ramojevusodagovixinafogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3cb2f98-6f2e-401c-811a-dcdbe2a44566/bewijebidawepilo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC765 4880 bytes
SHA-256: b635db6100a20207bc32bb5bc547b9e8c1d749810ceacf6097d11c8b0d7ab756
font_01_sfnt_off0000d7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 13260 bytes
SHA-256: 92ed7a65f0cb88ebafd02c131751ae78031f957ea5546e9bf1cca53e80665871
font_02_sfnt_off0000ff0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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