Malicious PDF — malware analysis report

Static analysis result for SHA-256 c425a18ff3f28dd5…

MALICIOUS

PDF

33.4 KB Created: 2020-08-14 05:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 236a933074d6e7fbb555791e5e25bb82 SHA-1: 31f43efaae98aaaa3c9a1ba7a53aa25a09d2f0e3 SHA-256: c425a18ff3f28dd554f17c8d8eec1b7f3b5585ab9cdc60e31627d2caafe40ce7
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to 'ttraff.ru' disguised as a driver download. This indicates a phishing or scam attempt to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this 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.ru/pify?keyword=chinese+bluetooth+dongle+driver In PDF document text
    • http://files.mrsbrandal.com/uploads/1/3/1/4/131406234/tatupejemozusevesax.pdfIn PDF document text
    • http://sifeluzaf.thecoloradoimaginarium.com/uploads/1/3/1/6/131637030/pawofasu-tetijatojurodi.pdfIn PDF document text
    • http://files.tuscarora-tribe-nc.com/uploads/1/3/2/6/132681307/wiwegunanuremirekuda.pdfIn PDF document text
    • http://files.sersproducts.com/uploads/1/3/2/7/132712129/pebor.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/1/0428/6945/7063/files/titajatirobowoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/76982166871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/56673219945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/sepelifitegil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/tijenapedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8923/9969/files/sodopipadanigedubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/86881882759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/14953317576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/practical_english_usage_archive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/ministerio_carcelario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/from_the_browder_file_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/23015032929.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_off0000469b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x469B 4980 bytes
SHA-256: ae12fbcffc35bb38f185a1f726ff38e518b6e03813194e38c4077386d92a0b4d
font_01_sfnt_off0000577b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577B 9776 bytes
SHA-256: c6ac83c1c977e5dadde9ee141a563ace27165c261fedb8a3a19c595ffb4bfc11

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