Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1fff4f193b766b…

MALICIOUS

PDF

44.0 KB Created: 2020-08-02 09:19:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1037f8abea838af2659d4d4e69cba89 SHA-1: f1bbd51a4c1a1f537166145a3aa5b9545f635253 SHA-256: 1a1fff4f193b766b5b94bbeeb82cf043ba9e68f5148f483927c31115ffa35585
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=analytical+mechanics+fowles+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous other links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted from this sample.

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=analytical+mechanics+fowles+pdf In PDF document text
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.pdfIn PDF document text
    • http://files.maltbyhilltop.com/uploads/1/3/1/4/131453633/248cab.pdfIn PDF document text
    • http://files.readywritercsb.com/uploads/1/3/0/8/130874526/3019184.pdfIn PDF document text
    • http://files.uxresearchandstrategy.com/uploads/1/3/2/6/132695212/8a76b2930a981b.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/1/0433/0258/4480/files/44275289103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5049/2316/files/fameb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/7047823963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/33733773297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/neradilavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2115/files/63733170875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2560/4513/files/16164170346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/pufijamadususamanolozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7334/7488/files/45961158026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4346/3074/files/zadom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/69613572653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/64934754734.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_off00006528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5480 bytes
SHA-256: 17eaffaa52646491fdffcd462aa75c29ddeea0cd0227f3f9ef86373d3cef1227
font_01_sfnt_off000077c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C7 13764 bytes
SHA-256: 6a5c3073b61727f0408abcbaec80bed1400189a2777616f69ad5e89743d40485

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