Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25601ed6a175cbc…

MALICIOUS

PDF

44.5 KB Created: 2020-08-02 18:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29dec0bbaad15b05e3f93e509d7d2ff3 SHA-1: c94436b197943941671bd4c74414128bf320db66 SHA-256: a25601ed6a175cbc3d570b7f85cf730912eb15137263de61adff499f694101d0
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 a redirector service that uses keywords like 'microsoft office crack mac'. This indicates a social engineering attempt to trick users into visiting malicious sites. 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.com/pify?keyword=microsoft+office+crack+mac In PDF document text
    • http://files.geoffreybshort.com/uploads/1/3/0/8/130813639/mutaw_zoguropatasuvig.pdfIn PDF document text
    • http://files.manateeconcertband.org/uploads/1/3/2/7/132740494/6371535.pdfIn PDF document text
    • http://files.oceanateyelevel.com/uploads/1/3/2/7/132711965/4274701.pdfIn PDF document text
    • http://files.coastalcandyphotography.com/uploads/1/3/1/3/131379306/bujisorikap-puguripe-nikedabawezoz-xuxana.pdfIn PDF document text
    • http://files.matthebert.net/uploads/1/3/2/3/132303382/3fe527fb0ca2a94.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/1/0430/0200/3609/files/475997212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/fibamerexojaragodedokudom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2694/8001/files/90865855227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/lewedaminimedilinukuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/58307188986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9632/4761/files/fiwifuboxuwubesaxepokul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6256/5795/files/gazabisaxivunonalek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4220/9945/files/27524145632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1560/1319/files/96269642150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0951/files/46550417877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4937/6161/files/55509104377.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B14 5064 bytes
SHA-256: 0b07aca0a284fab22b39d14b57d6533c35f5f145c2f001214b27d7595728ac15
font_01_sfnt_off00006c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4A 10128 bytes
SHA-256: 98aa87808f4e93440a881bfd8dff56503229eaab3c74d10bf88f107aa873d5de
font_02_sfnt_off00008f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F45 16376 bytes
SHA-256: c3d0ee408bee49a88931d2ac630a9fb52e88a46fabab5a72aa19e78bbe1d3826

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