Malicious PDF — malware analysis report

Static analysis result for SHA-256 498b01eebc36063d…

MALICIOUS

PDF

44.6 KB Created: 2020-08-06 12:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7895d1c86c57c43068de9899646d4533 SHA-1: bea362e091c22e9a3e4c314125c4d6dbdeb97600 SHA-256: 498b01eebc36063ddcc4c8da3d4076b680431525bfc47b874e711d2937bceec4
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, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, also contains the same malicious URL, suggesting a lure to download further content. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm SEO tactic to improve search engine ranking for malicious content.

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=basic+electrical+engineering+objective+questions+and+answers+pdf In PDF document text
    • http://noruxu.apiswc.org/uploads/1/3/1/4/131437601/3950214.pdfIn PDF document text
    • http://files.lightmagicus.com/uploads/1/3/1/3/131379268/xebaleb.pdfIn PDF document text
    • http://files.neemcalendar.org/uploads/1/3/1/4/131406893/c266fbe6b3b2c.pdfIn PDF document text
    • http://files.abstractdenise.com/uploads/1/3/0/9/130969999/fbc1822ff189f.pdfIn PDF document text
    • http://files.makejaxweird.com/uploads/1/3/2/6/132696274/pajerinuzupawawozum.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/1/0428/6559/0438/files/bodinogogano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/xizegeluvururoturaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/periodontologia_clinica_carranza_9_edicion_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/63174417798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/57646337958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/wukijeforemubidibupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/16280938201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5490/8071/files/budagasisutaruxununawuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/barujifod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7344/5792/files/21245332797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/75893564898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/wirobasurebenovuzanurabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8543/7853/files/lewasaguxeminifebowogowi.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 7

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_off00006bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 5868 bytes
SHA-256: de686b8e43b36fc95798e2156272297a79adb92cfa0b0c69689978abecb492d4
font_01_sfnt_off0000800f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800F 10780 bytes
SHA-256: 380f9105cf6bd8ba243af475f399fac54ac46b9532bafb72137465339f11eec0

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