Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad50f292142a414…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 01:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5018681a8bcc69c4e55c86a8fceb14c1 SHA-1: 72a5c2b3aac0411c58a06772252da2f88ea80989 SHA-256: fad50f292142a414bc0882e8fb888470f9a5fed83f9d624f405630ace9dc8182
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious infrastructure at `https://ttraff.cc/pify?keyword=pathophysiology+of+cardiogenic+shock+pdf`. This suggests a link farm or SEO poisoning tactic to lure victims to malicious content. The document body itself contains the same lure text and URLs, reinforcing the malicious intent.

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=pathophysiology+of+cardiogenic+shock+pdf In PDF document text
    • http://files.cathyskendrovich.com/uploads/1/3/1/3/131379719/6826173.pdfIn PDF document text
    • http://tebulubaw.emeraldtoursgolf.com/uploads/1/3/2/7/132740541/bd0654.pdfIn PDF document text
    • http://files.ihellary.com/uploads/1/3/1/6/131606208/vezigonekovomikoluv.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/1/0431/3550/0439/files/41723723510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/68266939776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/fugetokekodoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/cervantino_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/rovozalemadolatelaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/butasawowagisejut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/reddit_how_to_unhide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7872/0414/files/15609192772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1524/7771/files/colts_logo_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/vexonuduwax.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 2

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_off00006282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6282 5584 bytes
SHA-256: f10f1b9762d09445c15b8d0cf4cdd2c67db08bad310b54a3102e5a052263eec5
font_01_sfnt_off00007587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 10204 bytes
SHA-256: baa0f19c2523a78829d790391be18297b5df528c6748c2ff494d796f57281b8f

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