Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cfce02f77b365de…

MALICIOUS

PDF

45.1 KB Created: 2020-08-09 21:35:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 482509cdb18379e1cad973b7cf216baf SHA-1: e51af6d74f5e6d6158d049fcdc3e6dde1156b3db SHA-256: 8cfce02f77b365dee369d799af13ea7d0bb19f0717b05790f2afce19cdc5ec28
194 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, identified as a link farm. One critical heuristic firing indicates a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=anecdote+of+the+jar+pdf'. The presence of numerous external links, including one pointing to a malicious redirector, strongly suggests this PDF is designed to lure users to malicious sites. No scripts were extracted from this sample.

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.com/pify?keyword=anecdote+of+the+jar+pdf In PDF document text
    • http://files.sweettreeevents.com/uploads/1/3/0/9/130969440/9892637.pdfIn PDF document text
    • http://files.nespractitioners.com/uploads/1/3/0/7/130739907/8209662.pdfIn PDF document text
    • http://files.frucasion.com/uploads/1/3/1/4/131453267/636792.pdfIn PDF document text
    • http://lesero.jelizavetasuska.com/uploads/1/3/1/4/131407005/luvonenokobopo_katuwelir_dotududobugo_weburolewifoxo.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/1/0435/6908/6623/files/79569255157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/78119995933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/paxulava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/lubowixunujozomako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/58674371441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3636/8283/files/70067877616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/32300904848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/85685522959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/58284811235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/49132558061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/tovajedubenirigemen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32343356061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/34210702239.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 6

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_off000073f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F3 5100 bytes
SHA-256: f293f63a8a6b7cc71c3c6327c9638e281a7a1057c704e95d72876b74c64878de
font_01_sfnt_off00008551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8551 9992 bytes
SHA-256: c6ff3bb62b182f94a2c8c779e306caf7752b4e550a1ed1bcc33fb6a58854b887

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