Malicious PDF — malware analysis report

Static analysis result for SHA-256 604691be3ab608f8…

MALICIOUS

PDF

35.7 KB Created: 2020-08-12 02:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d301d1b4fb40bee118a0bd46da94cb3 SHA-1: 7fc60108b8c627d0f34fdd40731dc594be6f790c SHA-256: 604691be3ab608f85627e51945f7da3b03c21f781cc0784c641d23d9ef2c8f00
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 indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

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=gauge+theories+in+particle+physics+volume+ii+pdf In PDF document text
    • http://files.upwellings.com/uploads/1/3/1/4/131453252/momomapafugiz_zuvoxetejade_majose_pubozevurexeguj.pdfIn PDF document text
    • http://files.wales-on-wheels.com/uploads/1/3/2/6/132681812/jebekosozira.pdfIn PDF document text
    • http://fiwaf.superiorwayoflife.com/uploads/1/3/1/4/131453109/4542862.pdfIn PDF document text
    • http://files.stowefamilywellness.com/uploads/1/3/0/7/130739648/4953447.pdfIn PDF document text
    • http://mopabuf.massage-solace.com/uploads/1/3/1/1/131164250/garuwufozogeg.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/1/0433/0687/7080/files/62092070186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/cbse_class_11_biology_notes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/45422098364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/vexudironerufaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3099/4326/files/gigeguviporuzobava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/gawudivamafusug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/cities_skylines_road_hierarchy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/zulimamojedinutijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/gorirazelanuv.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_off00004c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8E 5760 bytes
SHA-256: c539ec478f69404a11597f5c197b43e079a93724e3bf9a0079ff2bc57c086a31
font_01_sfnt_off00006011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6011 9936 bytes
SHA-256: 0997ced12f2f73b99baad982fa2d96f341735aec2c9b9a00efda37f4bad8b150

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