Malicious PDF — malware analysis report

Static analysis result for SHA-256 147b1a96b4d9fae1…

MALICIOUS

PDF

43.4 KB Created: 2020-08-10 19:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96d855ae6cf8c24b7a9d8bf5d368e8e6 SHA-1: e146da886c61fda472d85637c83332c7b388bd89 SHA-256: 147b1a96b4d9fae180bb38e0bb385a685b58b85a88ee5a7487794995338fb30c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL is https://ttraff.ru/pify?keyword=cbc+f%25C3%25ADsica+pdf, which is designed to lure users into downloading further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malware or phish for credentials.

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=cbc+f%25C3%25ADsica+pdf In PDF document text
    • http://files.sarahpikedesigns.com/uploads/1/3/0/7/130775649/vebarozu.pdfIn PDF document text
    • http://files.allinclusivetennis.com/uploads/1/3/1/3/131398430/novirojo.pdfIn PDF document text
    • http://files.jrsamshoes.com/uploads/1/3/1/4/131453054/7372303.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/1/0428/6867/0620/files/20087702207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6512/2711/files/exploration_sheet_answer_key_subscribers_only.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6936/4632/files/ebook_machine_learning_c_bn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/world_history_book_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/redajivogujez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2534/9283/files/40971949972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9170/5502/files/85145193690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/ayushman_bharat_yojana_in_gujarati_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/75894951279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/37048385897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1415/6451/files/isometric_and_orthographic_drawing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/19451517472.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_off000069b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B9 5120 bytes
SHA-256: e27c04787bb55fb0b187142e900ff4f6530d9d4031ae230190741aa05859495c
font_01_sfnt_off00007b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B30 11076 bytes
SHA-256: 1295267d3ed92ee5e54a1116f266d0cec4c711b075e5af0ae126caa5f49122ca

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