Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e625df2d201ece…

MALICIOUS

PDF

58.6 KB Created: 2020-08-03 21:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 438ac77cae2c7ca82387d12fc691c06d SHA-1: 8c4ebddd37a128aa83d42496242274f520eebcca SHA-256: d4e625df2d201ecee442825c0950787cb009fd8ec2a324a41d4eddcd8890e484
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 of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=exploracion+nervio+facial+pdf'. This redirector likely serves as a lure to a malicious site or payload. The document body contains garbled text but includes the redirector URL and mentions 'wkhtmltopdf', indicating it was likely generated by a tool. 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=exploracion+nervio+facial+pdf In PDF document text
    • http://files.absolutelypaintedfaces.com/uploads/1/3/1/6/131637211/9c41905c90d6c4.pdfIn PDF document text
    • http://files.burninghammerfilmfest.com/uploads/1/3/2/6/132683154/520fe8a2.pdfIn PDF document text
    • http://files.usmgsol.com/uploads/1/3/1/6/131637218/3222349.pdfIn PDF document text
    • http://files.risechildrenschoir.org/uploads/1/3/1/3/131383247/4900629.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/1/0437/8837/0072/files/tafifakudex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0794/0520/files/bufakuxavurabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/18999787199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/27813378510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/81105534862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0979/4463/files/migebakiziferobotababoviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/biceps_workout_at_home_with_dumbbells_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/79363196274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/16479358742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/88312387382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/dolexinopodideta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/buwilexumuvekonufa.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 5

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_off0000a987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA987 5056 bytes
SHA-256: 5f9ca2cbaf6c253601632723dbef685f7b2e2e1cfa0be423afa3f863b22387e4
font_01_sfnt_off0000bad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD3 9996 bytes
SHA-256: 5dadb2d043ebba12ac89d14b1c100d5cd9aef8017d8f62a8396e812b14725fcc

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