Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce3bcb368a3aebd4…

MALICIOUS

PDF

55.4 KB Created: 2020-08-02 03:20:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0fda5273ae6db7149930bc030d4af94 SHA-1: 260383e65bcad069e6a75dfc201b4303d5df72e2 SHA-256: ce3bcb368a3aebd4bff26045a59f1b17644933a55fc9e877a62a65acd4333eb6
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=primality+test+python. The document body also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a broad distribution effort. The ML classifier strongly supports the malicious verdict.

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=primality+test+python In PDF document text
    • http://files.robinrgriffith.com/uploads/1/3/1/6/131606252/votiridalototi-zixav-wifapisunupupok.pdfIn PDF document text
    • http://files.edwardcooperrealty.com/uploads/1/3/1/1/131164568/kiwepafajilof-didibamo-gotexituz-sotixuzaxu.pdfIn PDF document text
    • http://files.laurelweldon.com/uploads/1/3/2/7/132712093/latebuvisi-molar-buvumo-jirawigalojuni.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/1/0431/7983/5549/files/17792719822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/govem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7596/8928/files/zofiduvilol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/7002345012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/fullmetal_alchemist_conqueror_of_shamballa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/rename_a_column_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4734/files/vesereboposedugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/25777900562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6483/3686/files/pifenaroxozagewedusijufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/43062252842.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_off000083b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B6 5164 bytes
SHA-256: 95d1fcbfb40136fb36d9eb769fc5e3c0e5a9d785649f676d45737a9e15f7c01c
font_01_sfnt_off00009517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9517 11236 bytes
SHA-256: 7e2ef8838278c5d4c8d341ab2db436b961af6af18966f4452b31d78c65fa996b
font_02_sfnt_off0000bba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA9 16132 bytes
SHA-256: 9f49da86255802b6629d54a3cb2f457a21cbdcbf9baae6848f5b2d67fd0ce2f2

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