Malicious PDF — malware analysis report

Static analysis result for SHA-256 772f10f0fe8f1914…

MALICIOUS

PDF

44.9 KB Created: 2020-08-22 04:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d96945509d71fd17198d963ba3b2274f SHA-1: c77a39f933d9dd44a7f290e7a1117473f2c8b7f7 SHA-256: 772f10f0fe8f1914f53f5ba12752b6903b8c408252345f530fd871020b25f159
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which point to a redirector infrastructure known for malicious activity. The document body, though heavily obfuscated, contains text related to 'gmat practice questions and answers' and a URL that aligns with the redirector heuristic. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=gmat+practice+questions+and+answers In PDF document text
    • http://pozeboli.jonathangillespie.net/uploads/1/3/0/8/130874379/1176941.pdfIn PDF document text
    • http://files.abqmfg.com/uploads/1/3/0/9/130969403/7a08b2941c.pdfIn PDF document text
    • http://files.bagsofnaturestore.com/uploads/1/3/1/4/131453268/gililujozeve.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/1/0448/2547/7277/files/articles_of_faith_in_islam_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/brocade_300_switch_firmware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/84594015558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/91191720558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3336/files/95731568500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/viropinufogutov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/texugupadixixokakaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/texas_franchise_tax_report_accounting_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/55965148008.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 3

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_off00006f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F56 5436 bytes
SHA-256: f7dc6879bf69da4f0a4c9d287fd4e46bda12efc310be9eeca365b1eaa19a0b1e
font_01_sfnt_off000081c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C7 10892 bytes
SHA-256: 82e11736b8871b0e7cbd71f61eaab1cca8cf74f159d4ef31dfd09f3a2a76f2d9

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