Malicious PDF — malware analysis report

Static analysis result for SHA-256 f51e5820ab75900f…

MALICIOUS

PDF

35.5 KB Created: 2020-08-17 13:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32bbaf0002e5aac9f2467555e43fcaac SHA-1: 8a54860fb2ffd5678599d5ed4bb48f8fe22cfd22 SHA-256: f51e5820ab75900ffa2d9bd426fddc8641030f86d363d16912914c0b85eba9ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The primary malicious URL identified is https://ttraff.cc/pify?keyword=char+broil+patio+bistro+180+manual, which is likely used for redirection or further payload delivery. The document body contains garbled text but includes the same malicious URL and several Shopify URLs.

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.cc/pify?keyword=char+broil+patio+bistro+180+manual In PDF document text
    • http://files.thelastvilla.com/uploads/1/3/1/4/131410012/5305812.pdfIn PDF document text
    • http://files.destinationsint.com/uploads/1/3/2/7/132740307/aab467219.pdfIn PDF document text
    • http://bonagowoj.pgmiddleschoolptsa.com/uploads/1/3/1/4/131438013/8716733.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/1/0428/6673/7311/files/39933692386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/zosuserebidexofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/porapuvunerojinus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8189/8913/files/fizutojezonir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/apprendre_le_franais_avec_des_dialogues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/voluwileduvokojiweruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/durofixun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/8993358982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6899/5237/files/16077400265.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_off00004bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC4 5492 bytes
SHA-256: 7733b2c5b13919ceb8a6cfb269fef1ddb35a71c752823957fc7acc1cd0c0e40d
font_01_sfnt_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 10408 bytes
SHA-256: d49891de84d3125d362be02f61bf4cb8578fffdd417961893d78b57a1d64ce1f

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