Malicious PDF — malware analysis report

Static analysis result for SHA-256 6904f8821e7c34e7…

MALICIOUS

PDF

48.2 KB Created: 2020-08-07 10:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78d0b332d331f34a3ae7cf6c47b45764 SHA-1: f31c1cff0b4ad8848e71a75d44ce4887858633a5 SHA-256: 6904f8821e7c34e745646b26fe5e16802129252e55a17912884e78cccd4d3652
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a phishing or scam campaign. The presence of a malicious redirector URL and a large number of external PDF links indicates an attempt to drive traffic to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=amaurose%20fugace%20pdf In PDF document text
    • http://files.sheeparmor.org/uploads/1/3/0/7/130776776/7533486.pdfIn PDF document text
    • http://mazoj.catherineodriscoll.com/uploads/1/3/1/4/131406082/zudodemax-lutosifi-zagukadakud-romamomixaw.pdfIn PDF document text
    • http://files.thepromptgroup.com/uploads/1/3/2/6/132682819/b61b2c597dbf63.pdfIn PDF document text
    • http://files.audaciouslifestyle.com/uploads/1/3/0/7/130738621/xusamagowes-suvixap-sabumisisinezo-zogabuvapafu.pdfIn PDF document text
    • http://files.highlandgamesacademyscotland.co.uk/uploads/1/3/0/7/130740389/gonudu_xexiwew_wizatiwat.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/1/0433/9567/8359/files/new_line_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/cod_waw_zombies_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/8379525862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2688/9369/files/22540700293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/zodemukiredajalerokuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/12150222265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/xoretenuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/49507156289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6464/6042/files/pugodesaralojorewedimepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/16167361145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/sindrom_asperger.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D2 5432 bytes
SHA-256: 1b6f757dd6acb169ce43742da7305299bd2ee29e802cbe60ef28e88ebac2f0dc
font_01_sfnt_off00008c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 12392 bytes
SHA-256: 3cc752a9b2480d0c8e160807055d8f83aaa304c2eca58e7599b0127baf7d7294

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