Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5d20525ff1aad3…

MALICIOUS

PDF

95.2 KB Created: 2020-08-24 11:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 106c933a707abc564f265351939dbd1d SHA-1: 4e0add2be7d176d73e95c0e9d2798a1a87908adc SHA-256: 7c5d20525ff1aad3d2b82b5655ba81a1fb02306a0f0ae9da273be95dabadf462
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The primary redirector URL is `https://ttraff.com/pify?keyword=treatment+of+hepatocellular+carcinoma+beyond+international+guidelines`. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution lure, likely delivered via spearphishing attachment.

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.com/pify?keyword=treatment+of+hepatocellular+carcinoma+beyond+international+guidelines In PDF document text
    • http://files.hotairballoonfiesta.com/uploads/1/3/0/7/130776462/davuve.pdfIn PDF document text
    • http://files.joshraftery.com/uploads/1/3/1/4/131453432/mizib.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/1/0432/8259/6008/files/bach_partita_no_2_allemande_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/statistical_modelling_in_pharmaceutical_research_and_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/39635564139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5555/7280/files/2nd_grade_reading_books_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/how_to_rename_file_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/create_prefab_unity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9564/files/30661693194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/callan_method_book_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5761/4741/files/arc_length_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/68030056130.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0001163b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163B 5760 bytes
SHA-256: 4f1f590baeb9a9e4ada5896f6b28fc1e33e856057ca329bb2a978c6d5ca04c9f
font_01_sfnt_off0001299f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1299F 15576 bytes
SHA-256: f82924e5b5189f1586f1e5caeea1a4aaa4bb889611bf65334e0280e3f27812c2
font_02_sfnt_off00015a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A71 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953

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