Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbfecf55acadf24…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 23:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc165bb02b83e43d68e97d51ffcd4deb SHA-1: 17d3c514c19e4fed59de65782e4f8cdc8cb91b9b SHA-256: dcbfecf55acadf249e0ba6c3bd8801bdf8b6029817346acf6152a8b5aa666729
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'business model generation' and the malicious URL, suggesting a lure. The presence of a link farm heuristic further supports the malicious intent of directing users to external, potentially harmful, content. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a malicious redirection attack.

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=business+model+generation+pdf+drive In PDF document text
    • http://files.mysamcooke.com/uploads/1/3/1/4/131452958/1105536.pdfIn PDF document text
    • http://pilef.spiritualteapot.com/uploads/1/3/1/4/131407424/sijididigovob.pdfIn PDF document text
    • http://files.knoxwm.com/uploads/1/3/2/7/132712214/6dbdc8904d90.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/1/0428/9835/8432/files/lewajoranuputefikilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/pdf_book_reader_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/meradujedovegevawupajefif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/segnale_analogico_e_digitale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/44105885037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/co2_welding_machine_specification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8195/6518/files/singapore_airlines_company_profile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/pumovapejotikogojaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/nufewiwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/tatuvaxame.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 4

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_off00006bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB3 5472 bytes
SHA-256: e15a681e5add2ba486699c9f74835d6dd5f82ca0559dd5ae632ed3eb0f299021
font_01_sfnt_off00007e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 10104 bytes
SHA-256: 00a7b2046fe428f721753a4f747cf7227000fa15ba9a05326dffe8e3266ef36b

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