Malicious PDF — malware analysis report

Static analysis result for SHA-256 a115d65ef1366954…

MALICIOUS

PDF

42.8 KB Created: 2020-08-25 22:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5295d8a66c229e08ade0c9036e459956 SHA-1: 90154a55e6cf56d3bd8e9256c86b41352e104604 SHA-256: a115d65ef1366954795dab6b2f7b62ebb7be08d8d27a28172dc39612f59c0d91
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=libros+de+la+segunda+guerra+mundial'. This URL is part of a link farm designed to attract users searching for specific book titles, likely as a lure. The document body, though heavily corrupted, contains the same book title and a URL, reinforcing the lure. The PDF also contains numerous links to Shopify-hosted PDFs, some of which are benign, but the primary redirector is malicious.

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=libros+de+la+segunda+guerra+mundial In PDF document text
    • http://zinifaru.omalleyfoundation.com/uploads/1/3/2/8/132814343/pekiza.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/1/0431/8347/2791/files/fusamunepibug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8621/6352/files/50288546540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/0279/7723/files/13987564734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/online_timer_bomb_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/xojunigofolipejix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/mubuzabanemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/lafexinavuloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/gofanubejax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7837/5829/files/kogamekipobenologasataf.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_off000068e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 5228 bytes
SHA-256: a64d76d5af44df0e79fba02f2aa8999cda7d7a699d1973eb8a3463f6e6a4b2a2
font_01_sfnt_off00007a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A87 11248 bytes
SHA-256: fc77ed6b9ff22a31cb0e6c05eb80d3455711466d14e03a63a9d506c0a0cbbef4

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