Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c1c0ec9865a53b…

MALICIOUS

PDF

45.3 KB Created: 2020-07-31 06:26:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c74f6b794d2bfa0e3348aadd8a0011a SHA-1: b10b5904e3481f740ce591f82b27dda272f036a3 SHA-256: 56c1c0ec9865a53bba6ee20a0aa62bc79f3593aa810848ee95c58767d5062a3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'adjectives list pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=base+and+strong+adjectives+list+pdf In PDF document text
    • http://files.omosparish.org/uploads/1/3/2/6/132695881/ca866cc2094de58.pdfIn PDF document text
    • http://files.artoonsforyou.com/uploads/1/3/1/4/131406226/woragaredasew.pdfIn PDF document text
    • http://files.stmichaelschoolpinconningmi.com/uploads/1/3/0/9/130969231/3727008.pdfIn PDF document text
    • http://files.pearlmintzerphotography.com/uploads/1/3/0/7/130738970/048ab6.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/1/0431/8376/7713/files/dufelep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/49455447289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/mafuxoxuwojiripuvew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/28332686574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/94885617956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/xinidubotezuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6535/1073/files/86187674785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/demajunarogaxali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/vomaduwifisez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/1679450337.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_off00006b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B24 5296 bytes
SHA-256: 451149c42e2ba55b826537387c44c197a28cc9e4b0ba3562b224c3421f44fa30
font_01_sfnt_off00007d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D40 13736 bytes
SHA-256: 163a6e26d90de255564e960f4f8223128bcd3c0a50fb0aab7e7c3c0c003e1783

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