Malicious PDF — malware analysis report

Static analysis result for SHA-256 78331b80395d570a…

MALICIOUS

PDF

32.9 KB Created: 2020-08-02 20:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 006fe8f775463a9319b39f3bf0bae880 SHA-1: a1c4e36737ba670e963bdb4050184e9d556c1d28 SHA-256: 78331b80395d570a9f1b85013be17ccfb81bca4c8abb0f2d82f335baf40cf777
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector service, which is a common tactic for phishing and malware distribution. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links suggests a link farm designed to attract users with deceptive content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=moldes+fofuchas+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=moldes+fofuchas+pdf In PDF document text
    • http://files.bemisfarmsnursery.com/uploads/1/3/2/3/132303099/taxiwobomedogofene.pdfIn PDF document text
    • http://files.broadwaypinups.com/uploads/1/3/0/8/130813765/8391871.pdfIn PDF document text
    • http://files.adewaleadeyeyeauthor.com/uploads/1/3/0/8/130874115/6343663.pdfIn PDF document text
    • http://files.raghuananthanarayanan.com/uploads/1/3/1/4/131407292/1632715.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/1/0434/4224/1688/files/tuwidepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/zuzagololamifawoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8228/5216/files/ganuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8272/7067/files/sulepotujizipuwalij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/43989115382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/dinasevutesemogewakom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2299/6888/files/74615344460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/75809858461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/pover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/55032653462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/9756917230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/9283139351.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 8

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_off00004611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4611 5152 bytes
SHA-256: 5956db0da22ee8ef15ab6f4647c57fa7388c07a1807b7471a8651c33d37afce7
font_01_sfnt_off000057a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A9 9460 bytes
SHA-256: e637c318b9a96960832650335f004e56137f566a296fccaec7a0820af783c833

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