Malicious PDF — malware analysis report

Static analysis result for SHA-256 709c7e9d9f570a35…

MALICIOUS

PDF

44.2 KB Created: 2020-08-13 23:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 588748f1be2b60850afd8f712358bdaa SHA-1: 40a86c028e5ae7ce657ca94d732f8608f4e70616 SHA-256: 709c7e9d9f570a3591af0ed386ad1a0f4bd7c218e1cc47c5aa3ecdb2126c5a07
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to redirector infrastructure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=free++cheetah+keyboard+mod+apk', is identified as malicious. This suggests the document is part of a link farm designed to distribute malware or lead users to phishing sites, likely delivered via spearphishing.

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.cc/pify?keyword=free++cheetah+keyboard+mod+apk In PDF document text
    • http://files.classicact.net/uploads/1/3/2/6/132683181/3188128.pdfIn PDF document text
    • http://pileva.fuze.co.uk/uploads/1/3/0/7/130740517/6472101.pdfIn PDF document text
    • http://vetaba.topofthesouthclinic.co.nz/uploads/1/3/2/7/132710714/molefosob.pdfIn PDF document text
    • http://files.kaitiakirestoration.co.nz/uploads/1/3/1/4/131455956/sulabebo_xeloxopufuto_tajunoperedo.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/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/61797083789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3067/4597/files/tejifarijitixim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/aparato_digestivo_fisiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/84730902260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/70351799167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3927/7734/files/56531949784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7779/1897/files/cymatics_free_vault.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/cancer_de_colon_hereditario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1658/5379/files/73541759803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/astm_e84.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/ecological_pyramid_answers.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_off00006d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 5364 bytes
SHA-256: 7832a368e074b0f7600594aee372eb22eb2d0901093f75e985d0cb7bdadc7130
font_01_sfnt_off00007f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 10640 bytes
SHA-256: 6bcfc630d8363e59e7ff4f1c5d4600dcae1a3105b7cb2a6ae2cb66aac94dace8

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