Malicious PDF — malware analysis report

Static analysis result for SHA-256 037171f36f619433…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 11:10:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c67a1f52e297d2f4b38e783e9d6841b3 SHA-1: 5040da753449efaf3b4f6f6de5c5f5fcb7d14bc0 SHA-256: 037171f36f619433cd4ac6eb9829c1952c3a4af2fe4d57cf41788b219ce6d90a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and benign-looking Shopify URLs, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or scam attempt disguised as a download.

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=klipsch+g+42 In PDF document text
    • http://files.socialhotspot.org/uploads/1/3/1/0/131070767/072da0879268.pdfIn PDF document text
    • http://files.coloredbyamycashcarry.com/uploads/1/3/1/4/131437724/miwopizexajeg.pdfIn PDF document text
    • http://files.kwfootography.com/uploads/1/3/1/4/131437475/rotoluf.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/1/0432/5307/2022/files/57214629168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/72001930708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/81849623684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5486/5320/files/sikumejutojarevafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/72164289677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9216/3227/files/77057432459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5774/9917/files/81584089390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/pazadazonetegokagijuwuvek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9200/8357/files/87188759451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/dolawadotibawisafejudo.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 4

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_off00006ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC0 5080 bytes
SHA-256: 9dd7fc8549bbd62ad44d0fc23b6b706d40f629e11a5272a6352524b7bea97ca0
font_01_sfnt_off00007c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C21 10148 bytes
SHA-256: 836710304294c433415775b6aff7dfa37ca646f2fb365d9adf83dd4d2d7f995c

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