Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8a23b70fe56557…

MALICIOUS

PDF

38.9 KB Created: 2020-08-11 02:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a111d290dbac775dda26e67aa43a68ae SHA-1: 8a8b2e4b61f076ce085e73c43ea9514f1d2e48ee SHA-256: 0b8a23b70fe565571259e3ed54113275652d366a26c9f59400480efd0641a695
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The primary redirector URL is https://ttraff.ru/pify?keyword=classification+of+matter+quiz+pdf, which is used to lure users to potentially malicious content. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=classification+of+matter+quiz+pdf In PDF document text
    • http://files.stefiecakesandtreats.com/uploads/1/3/0/8/130813111/dufiwabegawit.pdfIn PDF document text
    • http://xixojem.newjerseyalmanac.com/uploads/1/3/1/3/131379730/tozamizaxele_nofelid_rixow.pdfIn PDF document text
    • http://files.lousavage.com/uploads/1/3/1/8/131858791/7a9a527f89baa.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/1/0432/3826/0898/files/63359916228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/82480496777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/xuxepuwepebusalelek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/cbse_syllabus_for_class_12_physics_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/musaparujutel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/wondershare_editor_ocr_serial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3802/1544/files/37246397945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/9218768217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2092/7655/files/58741166146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1143/1838/files/bodyweight_training_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/captivating_john_eldredge_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/rivutazopadosuperub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/20514879617.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_off00005981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5981 5384 bytes
SHA-256: d19191608a9d7b90e5a109d9615625401258dc8da37dc0087060e08edac89c9d
font_01_sfnt_off00006bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB5 10224 bytes
SHA-256: 58fb4a3a3ce4eb3df2f94aaf19b63df4a4564993c7dc70d2e27f0e34883e95c8

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