Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78237a3aeaafeab…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 23:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73d8e1d82d3e1fca1462bc60cf606950 SHA-1: 3857bb44217f4968c5fa5a33a46a527d4fa82052 SHA-256: d78237a3aeaafeabc1accd6e3033e04f39eec5df607048b245b52ad319d1facf
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to downloading a PDF. The presence of a large number of external links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to increase visibility of the malicious link.

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=bhagavad+gita+in+malayalam+with+meaning+pdf In PDF document text
    • http://files.mattmediainc.com/uploads/1/3/0/7/130775261/sifepuk_gebul_resepowobagede_kotuginumaki.pdfIn PDF document text
    • http://files.moorestownlegendslax.com/uploads/1/3/1/4/131406510/mofowawonexupa.pdfIn PDF document text
    • http://bejomeba.horrortourers.com/uploads/1/3/2/7/132740214/tuvumadobobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/bicycle_repair.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/mebuxevewidajaxewevam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/21443205851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/vasez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/bedujelaxasipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/tobelovegenarinurovatija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/22738814047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/30254217894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30740110423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/27990634409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/basic_electronic_devices_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8042/3326/files/fikisizo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5910 5164 bytes
SHA-256: bab74ccef5253bb4981c35685794dbd02d28405896cd558fa654aafc355501e8
font_01_sfnt_off00006a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8F 14676 bytes
SHA-256: 0326d71e110d3221411f763b9bae23ee4b8294c873f5e19b58b4d41db1e421ef
font_02_sfnt_off00009896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9896 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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