Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc5dad893369885…

MALICIOUS

PDF

45.0 KB Created: 2020-07-31 04:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d659fe693b2b2aaa61203320a95a5fde SHA-1: e023d222fbb2a19507a0a57d54af647ed19b95df SHA-256: 6fc5dad89336988534e827c31fc811d8200901905f698357fd8cc400646e6eb6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, with one critical heuristic identifying a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document appears to be part of a link farm designed to drive traffic to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=function+of+store+management+pdf In PDF document text
    • http://files.envisionyountville.com/uploads/1/3/2/6/132682210/d3754.pdfIn PDF document text
    • http://files.cambridgeballetclub.co.uk/uploads/1/3/1/6/131636995/e0fe1f65d.pdfIn PDF document text
    • http://files.aflair4hair.com/uploads/1/3/1/6/131637131/2661670.pdfIn PDF document text
    • http://files.shilandsujitarts.com/uploads/1/3/0/7/130775197/minutonameme.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/1/0428/1516/0487/files/75609195037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5556/files/jakajajisigaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/retokimexiwuveres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/27260931736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/28888373647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/19780625191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/54941832104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/zisexaporafefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/kogemagumugurolupol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/nebebekafotus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/87466249345.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 4

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_off00007312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7312 5280 bytes
SHA-256: 0ff1f4fff90b3886145c4e44cfd1dba25a50ca359e5cbe093eda666cd6040419
font_01_sfnt_off000084e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E0 9888 bytes
SHA-256: aee6a04643c9105358ee39805659c86d4de90ac00b04452dcd34e23655891841

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