Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9f10e2b6d2c29e…

MALICIOUS

PDF

53.7 KB Created: 2020-08-06 08:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ced2db93e48ae654ec7ff35d0ac53643 SHA-1: d21ee4c42ee589bdd6e813ddd80c3d6c2a539925 SHA-256: df9f10e2b6d2c29eabd40b9694580e95568eba29c6ff7d0ab86689f7c5c00d56
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector, suggesting a phishing or scam lure. The presence of numerous external PDF links also indicates potential SEO manipulation for distributing 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.com/pify?keyword=annamayya+sankeerthanalu+in+telugu+pdf In PDF document text
    • http://files.motorqueuenaturalhoofcare.com/uploads/1/3/2/8/132815148/1303639.pdfIn PDF document text
    • http://files.honouredquran.com/uploads/1/3/2/6/132696154/difafudonamibe.pdfIn PDF document text
    • http://files.resortattractionsllc.com/uploads/1/3/1/6/131606984/9405938.pdfIn PDF document text
    • http://files.makealltimetreasures.org/uploads/1/3/1/3/131384300/jovazuzupi-vejexatove-doduvozavopajon.pdfIn PDF document text
    • http://files.sccuttingsolutions.com/uploads/1/3/1/3/131382134/8238554.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/1/0428/9848/9503/files/vizifudokanaributejumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/71165292957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/32651755767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2272/0922/files/biology_science_for_life_with_physiology_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/66043507089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/asian_paints_texture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2829/9427/files/dezunoferixewar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/zisepixezugukefimomojedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3398/4157/files/tamuvok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/trane_thermostat_wiring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/best_islamic_books_in_urdu_download.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_off00008d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7F 5612 bytes
SHA-256: 7a757a24568597434ccb8f811cd5783e19cc52c085a5659a91b3b364336f118f
font_01_sfnt_off0000a07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA07C 12900 bytes
SHA-256: cad7fce8a104c497e5971f5798bba2dd55af0f9f620c8cd6dea7e0eba546d642

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