Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03b1dac2541811c…

MALICIOUS

PDF

38.8 KB Created: 2020-08-06 13:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b2951b2bcd9a3745cdeba7c8cc0514c SHA-1: 79ffcca97ba23224c892b50840d30c4d6e148fc5 SHA-256: c03b1dac2541811c4aa887915116a002e958b19ed48e3307b7ee08b4e92e4f14
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=anemia+ferropenica+y+embarazo+pdf'. This indicates a link farm or redirection tactic designed to obscure the ultimate malicious destination. The document body contains garbled text and metadata suggesting it was generated by wkhtmltopdf, likely 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.ru/pify?keyword=anemia+ferropenica+y+embarazo+pdf In PDF document text
    • http://files.walkerthomasadams.com/uploads/1/3/0/9/130969992/4553516.pdfIn PDF document text
    • http://files.oasco.org/uploads/1/3/1/6/131636655/kumazodib.pdfIn PDF document text
    • http://files.gottfried-schweiger.org/uploads/1/3/0/8/130873804/2331787.pdfIn PDF document text
    • http://files.waitingonourmiracle.com/uploads/1/3/1/3/131378771/c7774.pdfIn PDF document text
    • http://files.hammondminiatures.com/uploads/1/3/1/3/131382078/a2ad6c23f.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/1/0431/2878/3002/files/jaxujuvowoxifefexuvow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69901941500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/60713697790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/setixinojed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/fifeduwivizalewosowaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/mifedulemivafoted.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/77759395812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3222/9541/files/terokiwibotuxerizunatakiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/kapuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/6377192735.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 6

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_off000058a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A8 5372 bytes
SHA-256: c797924ee5b520f9e320f12e9ba54877e1566d1477e382781e555a090365e51e
font_01_sfnt_off00006ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE8 10508 bytes
SHA-256: 9032a97af5dc6f44c899b8b3a37779c9e41b2031b104ef4230d85ed0fa26d902

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