Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3495e0949a9743…

MALICIOUS

PDF

49.1 KB Created: 2020-07-30 10:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa570df98c46382b7d58b4ca78aa6d1a SHA-1: 262a3a46bf9a41eb74aee1873206e2935aa7ea37 SHA-256: 1f3495e0949a9743208af1f53594cfcd16eb622a44854d335300eb360a71fc64
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary link, 'https://ttraff.cc/pify?keyword=cancer+de+colon+no+poliposo+hereditario+pdf', is designed to redirect users to potentially harmful content. Another heuristic identified a link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=cancer+de+colon+no+poliposo+hereditario+pdf In PDF document text
    • http://files.sand.penguinprof.com/uploads/1/3/2/6/132695478/tagotukulaze_suzope_xumosoduwenifa.pdfIn PDF document text
    • http://files.mskissam.com/uploads/1/3/1/3/131384468/6068497.pdfIn PDF document text
    • http://files.nortmilkendigital.com/uploads/1/3/0/8/130815726/nitotuvoviwipirotito.pdfIn PDF document text
    • http://files.synergyhairandbeautyelloughton.co.uk/uploads/1/3/0/7/130740165/forezolijafuvo-dimazake.pdfIn PDF document text
    • http://files.icd10physician.com/uploads/1/3/1/0/131070207/c1b805425d28ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/92135769171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/6437152220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/wuvorelijaraxovutemajat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/fitorebajubezixavefivar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/gimapapogelifinetoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/jufegapadidusujotilola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/61067126792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/kosemizeferepanegopan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/65446122720.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8393 5052 bytes
SHA-256: 88a5915eca4d75d1321f30491001f099ae53153539fee062eab01498e46ae11f
font_01_sfnt_off000094ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AD 10076 bytes
SHA-256: de1f02ab2bee489f16f4dc06be16e1c6a821296f2bee5e71b8f4646893081f4f

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