Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5c6260f39550f5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-03 11:33:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31c98b92dab96c52b61537e3c4eddb48 SHA-1: 804fa8ac574a48461a965d6f49385960069a23c8 SHA-256: fc5c6260f39550f56e283eefecab93318f599ef6a577f0aecca7ff1972ef1fe1
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for Adobe Acrobat Reader, which is a common social engineering lure. This link redirects to a malicious infrastructure identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, also contains the same lure text and the malicious URL, reinforcing the phishing attempt. The ML classifier strongly indicated maliciousness.

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=free+download+adobe+acrobat+pdf+reader+for+windows+7 In PDF document text
    • http://files.elishevaawendstern.net/uploads/1/3/1/4/131406537/e706630f.pdfIn PDF document text
    • http://files.patrickcoopermusic.com/uploads/1/3/1/4/131406885/1f21e73ead94.pdfIn PDF document text
    • http://files.mattfilmsltd.ca/uploads/1/3/1/3/131380175/tezakafu.pdfIn PDF document text
    • http://files.petphotobooth.org/uploads/1/3/0/7/130776682/kidikuropage.pdfIn PDF document text
    • http://files.lmtechnologiesne.com/uploads/1/3/2/7/132740445/1651718.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/1/0433/0212/5733/files/38738410243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/96269408679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/xatasaliwitipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/bmw_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/80552947644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6153/4111/files/kizifakoruju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3101/files/how_to_get_advantage_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/55402020860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/53507231833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.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 7

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_off00006aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA3 5416 bytes
SHA-256: 05d04ab2aaeb65978905885d7e42f80831243111df2a7701bc481059c3fce242
font_01_sfnt_off00007d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D33 9872 bytes
SHA-256: 0c80acc9345089282a651ae80ab9c6e968a4cb68715eaa53f6184a9efb2fd454

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