Malicious PDF — malware analysis report

Static analysis result for SHA-256 1818792c28f78175…

MALICIOUS

PDF

43.2 KB Created: 2020-08-17 11:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94c95f8f885a52ec3d7563d6f72918e3 SHA-1: 2189dc03797333a1bb60ffd14016524d9dc8337d SHA-256: 1818792c28f78175fba02403ddba3522f291ba3ad118dddc37ccc7984acaa155
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector domains like 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious redirector URL. The presence of a link farm and redirector suggests an attempt to funnel users to malicious content, likely for phishing or malware delivery.

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=canned+beans+nutritional+information In PDF document text
    • http://puketuko.alisonjerrydesigns.com/uploads/1/3/1/4/131406082/4109977.pdfIn PDF document text
    • http://files.theaceso.com/uploads/1/3/0/8/130814208/3017576.pdfIn PDF document text
    • http://files.marcytcm.com/uploads/1/3/2/8/132814136/77512f456be13.pdfIn PDF document text
    • http://files.andiamo-ranger29.com/uploads/1/3/1/8/131871586/mubutofer-wekela-zupozeluvara-damopoxonuledu.pdfIn PDF document text
    • http://files.essenceofblissmassage.com/uploads/1/3/0/7/130739268/razurapiriro-wirakixawil.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/1/0434/6616/2341/files/j_dilla_donuts_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/palm_trio_650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/harpoon_operation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/62862628871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/yookoso_an_invitation_to_contemporary_japanese_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2799/5552/files/bozado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/68449634451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/94838489111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/dugodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9930/7673/files/pexupelizarobewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9442/3192/files/free_simple_budget_template_word.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_off00006c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2A 5096 bytes
SHA-256: a1ca69b70416210ec73145ea66311beacf3a0a67c54f2400884256e83381a596
font_01_sfnt_off00007d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D62 10068 bytes
SHA-256: ed018940628a9f47cde9fd1a9717fe99ce4f169a93c13467fb02619062623c5f

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