Malicious PDF — malware analysis report

Static analysis result for SHA-256 560ef02d10867001…

MALICIOUS

PDF

77.1 KB Created: 2021-01-08 03:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1117fbdcafd055cef4157b8a109395de SHA-1: bb71559f6cc3d955bac28388480f62a252af1c2c SHA-256: 560ef02d1086700141cdd1a2b1e500014c73ec6b01c6b6f63197f5b8d7de44da
214 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 a large number of external links characteristic of an SEO link farm and 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 0.9995

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/123?utm_term=primary+3+lesson+23+grade+7 In PDF document text
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/1797226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f93ecdf31118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482002/normal_5fc1481a427eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417212/normal_5fac16662c373.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/jfnggha/cute_gumball_machine_drawing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5f88e6925362c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5fd916174052d.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/577bb795-3e1f-4a7a-9e9c-1aa47a6159cf/46644150984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28f0c282-94ae-47da-838d-84aa1e72f436/ashrae_pocket_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193f58dd-99dd-41c0-8c71-68da6e916203/hospital_de_traumatologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bfabf5a-73f7-4069-b454-773cd86b184a/chicos_pipefitters_pocket_cards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aded1efa-db13-48f9-91e2-8deed98fbbd5/vijelenof.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 3408 bytes
SHA-256: 4330f61dbb7309a79720df3cb8996e74847699747be38d6e583cc14dcd8b8a78
font_01_sfnt_off0000dd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD02 5332 bytes
SHA-256: 4b8a62e597e85a1a757fe4e6c52d13642842326171b22a8486166450b2524c15
font_02_sfnt_off0000ef05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF05 13092 bytes
SHA-256: e0520d0d0001449d6a17b28779efa4a669f4e6699d91a725d69bc088238d5889
font_03_sfnt_off000118b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B4 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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