Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad18a40b4bfc4457…

MALICIOUS

PDF

42.1 KB Created: 2020-08-14 13:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34639f7ef5e0e9a8bc3340f7a3db037c SHA-1: 4a741f46b3520af80b1418e5d65d76345232822e SHA-256: ad18a40b4bfc4457ba892926663c06b0b4077a41f6dafd0dc9052d97333a585a
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'https://ttraff.ru/pify?keyword=bleach+games++for+pc+free'. This indicates a social engineering lure, likely to trick users into downloading further malware or visiting a phishing site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and PDF structure strongly suggest a malicious intent to redirect users.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bleach+games++for+pc+free In PDF document text
    • http://nakumud.happycamperllc.com/uploads/1/3/0/7/130740480/lupesatebaxuku_vugatigunaw_nubex_bisibirud.pdfIn PDF document text
    • http://womin.shopgrimm.com/uploads/1/3/2/7/132712207/1292307.pdfIn PDF document text
    • http://files.nanaimotreeservices.com/uploads/1/3/0/7/130776142/2678612.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/1/0432/9078/7996/files/rudizifunimivegemadotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/54195442429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/34624016804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/xevukisusizafojobefuduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/38700495651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/godepefat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/bukiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/19089139819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/34739361699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/digital_electronics_viva_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/50475635177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/16976949644.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_off0000661b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661B 5480 bytes
SHA-256: 31496bc1db3af5e22a90d89ba36e986dc216e28f49d365179473787afcea6930
font_01_sfnt_off000078a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A6 10212 bytes
SHA-256: 67d90fb7a7f83a9b37fcc0a03ffae13caef8f5b9f88b3dd115da3cc9717f4bb8

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