Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca979e43077673f…

MALICIOUS

PDF

64.2 KB Created: 2020-08-05 09:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf4d6cc2ea9feeb02a7e09a002a3410e SHA-1: d0e24d35aad70b2784945d104621f239b31bd8cc SHA-256: 0ca979e43077673fe9fc0526a5faa6c7196b4c0decf70ae0b2953d636f575e2d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links, many of which point to a redirector infrastructure known for malicious activity. The primary redirector URL is https://ttraff.ru/pify?keyword=character+of+a+leader+pdf, which likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The ML classifier strongly supports the malicious verdict.

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=character+of+a+leader+pdf In PDF document text
    • http://files.care4teeth.org/uploads/1/3/1/0/131070938/7475460.pdfIn PDF document text
    • http://files.wolfemountain.com/uploads/1/3/1/6/131636978/fufitosavivodu-lajugigise.pdfIn PDF document text
    • http://files.blacksheepcontemporary.com/uploads/1/3/2/6/132695258/japumebon.pdfIn PDF document text
    • http://bisazopi.gilmsp.com/uploads/1/3/0/8/130874422/190e34f1b8fe.pdfIn PDF document text
    • http://files.vitalfitness.info/uploads/1/3/1/4/131408572/veladezapu.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/1/0432/7089/7824/files/16782601319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/how_to_be_even_better_manager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/zaruxawowudesof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/job_skills_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gowaluzefep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/90235763288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0920/files/application_format_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/ponopolikepevunuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/86506396381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/25423552749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/6277252978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/90898088772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/88499660140.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_off0000c0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0D3 4968 bytes
SHA-256: 8ccd36840fb2ff5d4890f61160501362dfa38e7dd466219e19bb5b4c07705bd2
font_01_sfnt_off0000d1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B0 10036 bytes
SHA-256: 5f8d46db47b62cf1cb1b8ea60e1fe7f05f1affefd5eab8acab3fcb9710edd99a

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