Malicious PDF — malware analysis report

Static analysis result for SHA-256 d192d0c7f6422fec…

MALICIOUS

PDF

43.1 KB Created: 2020-08-26 18:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3e9c1ec66fa5bf71fbb9dbc93fee2ea SHA-1: f60d0aa78915bfffb8a6b3917d8ff5885ff21a2e SHA-256: d192d0c7f6422fecab761c968a9c8a7d6a9ad4cbe4910452324041dbcd9d302a
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic findings indicate a PDF link farm, suggesting the primary purpose is to distribute malicious links. The document body contains garbled text, but the presence of the malicious URL and the link farm heuristic strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=300mb+audio+dual+worldfree4ou In PDF document text
    • http://files.thamechoralsociety.org.uk/uploads/1/3/0/8/130813644/wulugu.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/1/0434/0531/2163/files/gears_of_war_ultimate_edition_unlockables.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1355/2802/files/certified_network_defender_study_gui.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6866/1660/files/latojodagimasuzinujof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/xutobawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/biochemistry_4th_edition_donald_voet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/pujemilunitapojuzedejabur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/mupadabuvexonavanagubov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/ready_player_one_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2634/1272/files/11378072903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/15074135258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3384/4119/files/gemafewa.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_off00006938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6938 5408 bytes
SHA-256: 051ca4693db67091791d0a7582a63fa1ad07f2c0848abd262db7ca47e9d4dc63
font_01_sfnt_off00007b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 10764 bytes
SHA-256: f962ad66d973ecf89c5c6d03e0d32514e0a595f852dbb20fdc5376deac8161ae

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