Malicious PDF — malware analysis report

Static analysis result for SHA-256 df140230c016a5fa…

MALICIOUS

PDF

47.6 KB Created: 2020-08-05 11:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 334dc5ccc501793057c0fe4bb2907f0e SHA-1: 94671689a8cd5bd703b743c17cfde3e0cdd1298c SHA-256: df140230c016a5fa83a36d851b723f78007a821b991112ac64dca5d441112db5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.cc/pify?keyword=ansys+apdl+practice+problems+pdf'. This indicates the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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=ansys+apdl+practice+problems+pdf In PDF document text
    • http://files.positivebirthportsmouth.org/uploads/1/3/1/0/131070379/1023602b16b3.pdfIn PDF document text
    • http://files.libertymerchandise.org/uploads/1/3/1/4/131453541/04af9172cb18dd.pdfIn PDF document text
    • http://files.psychicreadingsbyjohn.com/uploads/1/3/1/4/131453436/fudajeseno.pdfIn PDF document text
    • http://files.humanehomesnc.com/uploads/1/3/0/8/130874254/vitabafogid.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/1/0430/4620/7650/files/94720033018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/99307669672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/sixagusizuwotinosawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8147/9832/files/skripsi_bayam_merah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/xezojup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/17512078137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7719/files/canon_ipf770_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/how_to_hack_a_coke_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0843/2027/files/56035403441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/52606527626.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_off00006b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 5532 bytes
SHA-256: 72a52f0138bba24c225c3d7b811cd61a9f9e18ab396e3c8a0c9fec77660d48de
font_01_sfnt_off00007e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 16268 bytes
SHA-256: 84b85563d9a7f12ccf34898c66ddc2cd8392e3662c6347e25dabb3b90f51fefd

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