Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bee832961fad56c…

MALICIOUS

PDF

42.9 KB Created: 2020-08-24 15:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4f3ead2ccdc9f30ffd7219665457a98 SHA-1: 51de0f9e4c3b8b4fca92dd2f591be86cdeab0fe9 SHA-256: 5bee832961fad56cc72da17fca7ab361be8095abeae806bab5b7e0c5bb06ba8f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is a worksheet, likely a lure to encourage clicks. The presence of many links to external PDFs, including benign ones on Shopify, indicates a link farm strategy to obscure the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=expanding+and+combining+sentences+worksheets In PDF document text
    • http://kowik.chelseaborgman.com/uploads/1/3/0/8/130814411/ddcdbaa7a122271.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/1/0438/2785/5522/files/winakekexofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7505/1413/files/wusunukadif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/29333249595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/ever_never_already_yet_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/66252961063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/wulanaxavojusimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3493/files/podanuregavukixipuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4653/5322/files/sibasudatojazisodopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tiwimuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/vejiga_neurogenica_manejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/pekapimeg.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 1

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_off0000686d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686D 5776 bytes
SHA-256: d4143ad91dbdb1e9bdc7b21978892dec0361314c8948a105ed8768c838c04f03
font_01_sfnt_off00007bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFF 10192 bytes
SHA-256: b790c487ebe4df8a9ed400912d981984cbccfb51c8ae48538672ef182080d996

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