Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0bd06fb38d02ca3…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 09:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 950f17007cd307fbafaaeb127dd1ef0b SHA-1: 0aaaf1ad752e2b2f482bf31c02ff206d01a23499 SHA-256: c0bd06fb38d02ca327c9be0cd933234400f3307e731ffa608d4f2667f969ba1d
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=belajar+excel+pdf+gratis`. This indicates a phishing or scam attempt designed to redirect the user to malicious content. The document body itself is heavily obfuscated but contains the same malicious URL and numerous benign-looking Shopify URLs, likely part of a link farm to improve search engine ranking for the malicious content.

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=belajar+excel+pdf+gratis In PDF document text
    • http://files.inachildsname.com/uploads/1/3/1/4/131406811/ff1a386aed0c0c2.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/1/0429/9912/0033/files/3069433643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1365/files/estomatitis_aftosa_herpetiforme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/paxesufepusip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7479/8247/files/apocalypto_full_tamil_dubbed_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/1912/7195/files/proceso_administrativo_de_ventas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/story_elements_worksheets_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/12986784532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7837/5831/files/surah_yasin_download_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/somefuruzututetug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/pruftechnik_alignment_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0973/2771/files/developing_tactics_for_listening_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F12 5516 bytes
SHA-256: 4211bb2620e68ea5e1594531e600eb25369796b1f957df871cfd1e6ac3e262e4
font_01_sfnt_off000071e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E1 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00007a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6F 10764 bytes
SHA-256: 494f768b5985d1046e603b1437429ce3b7f7651dd8d9fe6d397a7384f395072a

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