Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f826b9164e18931…

MALICIOUS

PDF

34.9 KB Created: 2020-08-19 07:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09029fb53c15ab1453d22852f43bb0d8 SHA-1: b580f4342c64b917a74b3b7e3f0f9fdd6f948fe2 SHA-256: 3f826b9164e189314acb73a034fc3abb4041335746b9905ffaf3fceee306cc5e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com' with a query for 'windows 7 iso google drive'. This indicates a social engineering lure to trick users into clicking the link. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of a large number of external links, many pointing to benign Shopify URLs but also including other unknown domains, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF.

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=windows+7+iso+google+drive In PDF document text
    • http://files.photoforanyoccasion.net/uploads/1/3/1/8/131856086/pukafesazilesi.pdfIn PDF document text
    • http://gasiguk.athensmediation.com/uploads/1/3/2/6/132681352/da5b3313a083.pdfIn PDF document text
    • http://files.designs-by-nathan.com/uploads/1/3/1/3/131380158/9ba8b0a.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/1/0441/1149/5320/files/black_sabbath_paranoid_songbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5395/4710/files/14449747245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/xujolozijogufomitewepip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6851/0628/files/online_schedule_maker_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/rmv-_1_form_geico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/31875428336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/47213856098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/89571602820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/how_to_change_discord_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/35082819629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/dry_white_wine_crossword_puzzle_answers.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 5

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_off00004b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B30 5028 bytes
SHA-256: 91a7f8e5ad2dc482fbfdce7ce5d45dcb325202a989fb53771a42868eb13087e8
font_01_sfnt_off00005c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C81 10180 bytes
SHA-256: 9900a17ba54ebfa381a9c18fec5b9cdc973c0358115fdd8746b1d3318b873310

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