Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6d8da73f930da4…

MALICIOUS

PDF

42.5 KB Created: 2020-08-04 07:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96c7a31873ffe6d0472f1694eb040687 SHA-1: cce417d683a00fbb35a1c0e90fe94543454952f1 SHA-256: fd6d8da73f930da4ee5076ccdf43fb3af8f44e55223ac886575c1fca06d0fd86
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about water generation systems. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK directly indicates this malicious intent. The ML_NYX_PDF_MALICIOUS classifier also strongly supports this finding. The document body, though heavily corrupted, contains the URL that is likely used as a lure.

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=purified+water+generation+system+design+pdf In PDF document text
    • http://files.churchstrettontaxi.com/uploads/1/3/1/4/131453850/210815.pdfIn PDF document text
    • http://files.oregonbigfootfestival.com/uploads/1/3/1/3/131380000/b4bed62f87b.pdfIn PDF document text
    • http://files.pnagkc.org/uploads/1/3/1/4/131406893/4e992710aa859.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/1/0432/3937/5012/files/54766742428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7211/7141/files/53890069169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/2532408263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/93653147843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/xuwuxenapeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/bivutunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/sukinomewatelarevusozube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6447/3253/files/modevelax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/tezaberazoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/49497385696.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_off000066c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C3 5524 bytes
SHA-256: 00753f5b3a11c75a56a90ba1bf8057970ffd2fa14c3fcf317ecb77d68e8818e7
font_01_sfnt_off00007994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7994 10372 bytes
SHA-256: fd1670e7ed1be6d591744dda8eb1800d151efb3bab80098e979eb0a2b1ea5570

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