Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f422415ca6c459…

MALICIOUS

PDF

38.8 KB Created: 2020-08-04 21:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2a012af121305270ae8b7fe9bce8b3e SHA-1: edfe443da991f561ff84ba523441dd0e808a020e SHA-256: d8f422415ca6c4593d3fec8df952e3b6ce5723287ba015ffde7295a668887a5f
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=acidity+of+phenols+pdf In PDF document text
    • http://files.americandrillreport.com/uploads/1/3/0/9/130969473/9322614.pdfIn PDF document text
    • http://files.chinoteaparty.net/uploads/1/3/2/8/132816041/vefavox-tomedidedejo-kifupeg-fawibirovunabij.pdfIn PDF document text
    • http://files.sswonline.com/uploads/1/3/0/8/130813757/6073405.pdfIn PDF document text
    • http://files.foosie.store/uploads/1/3/0/9/130969654/sokusudekagajuxinimo.pdfIn PDF document text
    • http://files.bodybrainexercise.com/uploads/1/3/1/3/131398097/fomuw-fuvonixudegetal-pumuduxev-lezekizewuzo.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/1/0435/5004/8420/files/13934291608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/rolling_with_the_flow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/74038312800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8456/3110/files/logan_s_run_tv_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/reralajegedewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/latin_bass_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/lufenokibumanuwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/zebuvoperuxiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/37734199022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/bagiriwixup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7994/8705/files/rawatafid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6453/8776/files/island_royal_hacks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8780/5081/files/reverse_list_python.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_off00005d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D99 5028 bytes
SHA-256: f8f0a3ce494413fc3cb182d13027d4292d5424b3cb4f59c41403390004557625
font_01_sfnt_off00006ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECC 9328 bytes
SHA-256: 8b9e714700a6b205731ce26180770ac5d9b962e28ec327fd2a76fb373dd173d1

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