Malicious PDF — malware analysis report

Static analysis result for SHA-256 29385c82e6ba30a8…

MALICIOUS

PDF

41.8 KB Created: 2020-07-28 22:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36e23f86b54b6c9355d46626cc1933c5 SHA-1: 2d1516479b1a64b3d5a1b56dd6c534fec8cacf49 SHA-256: 29385c82e6ba30a8a8a40202366bce3076ebb52bedbcbce6b50554c8521b16ba
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 external websites. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to '911 trivia questions and answers', likely a lure to entice users to click the malicious links. The ML classifier also strongly flagged this PDF as malicious.

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=911+trivia+questions+and+answers In PDF document text
    • http://files.pruewalkerfasd.com/uploads/1/3/1/4/131437953/deboxepij.pdfIn PDF document text
    • http://files.constitutiondaycentre.org/uploads/1/3/2/8/132814146/duwuxok.pdfIn PDF document text
    • http://files.indianausbr35.com/uploads/1/3/1/4/131455680/peduvonedi.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/1/0434/5364/4966/files/80693096518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/doragewotupepefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/45541233676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/59771881901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/59359577723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/sekelipusatopiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/62694148352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzibuwusupamodugibeboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/gofefodewalelokin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/22038376514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/lobarofitesakaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/setavewu.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_off00006532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 5060 bytes
SHA-256: ba7e277f5d5ff01929d6309d50307b50dd7111a957e05ede2c9aaf16bda5eefa
font_01_sfnt_off00007685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 10380 bytes
SHA-256: 003dbcb53a7324d21856fed7676092957bda59d6ea182a76f636bf08857c6e82

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