Malicious PDF — malware analysis report

Static analysis result for SHA-256 90944d83b9228fa8…

MALICIOUS

PDF

37.6 KB Created: 2020-08-20 06:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9f335c3ea04688e82de8ae2dcdcc2f SHA-1: f9aa2eff54a7ec6043dc080cc0d45a884a2d0a9b SHA-256: 90944d83b9228fa846a107696d6b6bf3b6661f43312795290adb1b0a750a1cb5
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also assigned a very high probability of maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.cc', are indicative of a phishing or malware distribution attempt. The document body contains garbled text but also includes the malicious URL, reinforcing the attack pattern.

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.cc/pify?keyword=kenton+county+ky+police+reports In PDF document text
    • http://files.jbelova.com/uploads/1/3/2/8/132815190/sesapuzunoxig.pdfIn PDF document text
    • http://files.435676578364674396.com/uploads/1/3/0/7/130738615/ruwigavujekubofamu.pdfIn PDF document text
    • http://files.stpaulsyr.org/uploads/1/3/2/7/132712080/3051535.pdfIn PDF document text
    • http://files.moshathestylist.com/uploads/1/3/1/1/131164048/sevarepanuku.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/1/0437/7470/5815/files/ccm_hockey_jersey_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/article_of_association_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/68178476009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/kowikotunisapawerikoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/xusezonagabopasekisupeber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golizikedakumeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8438/7238/files/types_of_pneumonia.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 6

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_off000056cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56CF 4852 bytes
SHA-256: ca2e9aadb8a17c17077dcfe388705b102bc550560086701fc3caa24da06f2989
font_01_sfnt_off0000676f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676F 10144 bytes
SHA-256: 35b55ee9fd933d338c8f8f65812f6606ed6bb74513ce41109913c78ee393fad0

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