Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f51bfa40292499…

MALICIOUS

PDF

60.2 KB Created: 2020-08-20 18:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c1894f39043fa34a106b2f3645dbf9d SHA-1: 3340befdf2c2e6202fde98ef67bab9ee192385b3 SHA-256: 90f51bfa40292499a3392d08bc3a24464de4afe67189857701feea95765808cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious by an ML classifier and contains a significant number of external links, including a known malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=manual+autolisp+autocad+pdf, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains references to the redirector URL.

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=manual+autolisp+autocad+pdf In PDF document text
    • http://files.number120designs.com/uploads/1/3/1/3/131383651/rotimewel-gorijiduladuw-zagumir-bukagijijefire.pdfIn PDF document text
    • http://files.harbourstreetjazz.com/uploads/1/3/2/8/132815791/6ba43b2f.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/1/0430/6694/9799/files/94355204160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/11080670803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/ravekoxebuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0565/2637/files/agile_bertrand_meyer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/83005489372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7461/files/breast_cancer_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/55343105578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/advertisement_examples_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/chess_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2960/files/wisafimekowebepaf.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_off0000ada5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA5 5056 bytes
SHA-256: b46c484864df32c7264fddc920f4d12652306713f0dc86f66f3825f5bdbff961
font_01_sfnt_off0000bef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF4 11392 bytes
SHA-256: a6c618383dc60c8db0e0f02771711c2b89a63fb0d8a853b40f662101dc44324b

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