Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65d5ff669babc44…

MALICIOUS

PDF

59.2 KB Created: 2020-07-29 23:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04cc5388e81f0b62a6591f94b6d7f80c SHA-1: 6d7194584ed23c7fe5ed298f0fc2351331eb113b SHA-256: d65d5ff669babc4499d040c59c63c2fcad892c5e464595ba219d7ce43ab4d935
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=accounting+ratios+class+12+questions+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous external PDF links also suggests a link farm or SEO poisoning tactic. The ML classifier strongly supports the malicious nature of this PDF.

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=accounting+ratios+class+12+questions+pdf In PDF document text
    • http://files.iriefire.co.uk/uploads/1/3/1/0/131071114/rowade.pdfIn PDF document text
    • http://files.mudgleyholidayhouse.com/uploads/1/3/1/4/131453650/ba273df1.pdfIn PDF document text
    • http://files.emmanuelcrespoartworks.com/uploads/1/3/2/6/132695213/sotafipuletabamuki.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/1/0433/6353/2951/files/78771829481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/zaxufipukikexadaner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3250/files/tajew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/devazojevafaxage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/64050893546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6340/1877/files/99757088248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/zederaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9702/1854/files/24660988093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/givinavub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/daxinotosorivowobamapimon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/75932477535.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E1 5504 bytes
SHA-256: bb0bab478cecf7f0914894d164cba0e7a8d97dc9d91a20f8e6191deb7f8b78de
font_01_sfnt_off0000a6a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A0 10376 bytes
SHA-256: aba967c9c604d86b78ee1c4802cb909f8c39c09f0063e089c88abaccfe371f72
font_02_sfnt_off0000ca15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA15 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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