Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac61ceabef5ae88…

MALICIOUS

PDF

47.1 KB Created: 2020-08-19 20:49:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb36e4e410c08622b0e30364d3868c3c SHA-1: 1323f1a9e0d61bf90e4d826fd9d20bcbbdd09d3d SHA-256: 7ac61ceabef5ae887a09db59bb435db29fd58ba58a52dce15da01beebc24fd1f
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and SEO link farming, pointing to a lure for free downloads. The primary malicious URL, 'https://ttraff.ru/pify?keyword=battle+realms+3++full+free', is identified as a redirector. The document body, though heavily obfuscated, contains text related to 'Battle Realms 3' and the malicious URL, reinforcing the phishing lure. The presence of embedded links and the ML classifier's high confidence score support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=battle+realms+3++full+free In PDF document text
    • http://files.valleytems.org/uploads/1/3/0/7/130776312/favumifu.pdfIn PDF document text
    • http://files.adobeforfashion.net/uploads/1/3/2/6/132695919/1d5642acef07444.pdfIn PDF document text
    • http://vamanoret.jilliandavid.net/uploads/1/3/1/4/131483378/4151268.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/1/0429/6186/2810/files/69402322525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/79451305561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6727/files/74079224054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7998/1470/files/77714460424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/20534641175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2397/2005/files/bafufesarinari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/xatepuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/little_alchemy_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2271/5801/files/wovatebodilegef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/spinal_anesthesia_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8981/1861/files/51183203957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/rodoxi.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_off00007b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B38 5124 bytes
SHA-256: 684193d1e3c05df5731f6538fcb4614500b518e648938b133e68acdacb28885e
font_01_sfnt_off00008c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8D 10144 bytes
SHA-256: 6f6a31de7b781c5c3d6b47269ac6db15f4adaf71a408af75e7343667d469717c

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