Malicious PDF — malware analysis report

Static analysis result for SHA-256 9744ed10cb6649fb…

MALICIOUS

PDF

45.8 KB Created: 2020-07-29 18:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83641803658487d940c472dabb8c32db SHA-1: 69fda6702ca658003ab88c767a6ddaef731dde8a SHA-256: 9744ed10cb6649fbcae5373d8f3e34b36390fec1bb543562aab7a518e879fc3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'biology questions and answers'. The primary malicious URL identified is https://ttraff.com/pify?keyword=biology+questions+and+answers+for+class+10+pdf, which is likely used to redirect users to a phishing or malware distribution site. The presence of many external PDF links also suggests SEO poisoning tactics.

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=biology+questions+and+answers+for+class+10+pdf In PDF document text
    • http://files.suntreehealingarts.com/uploads/1/3/2/7/132740270/zipawe.pdfIn PDF document text
    • http://files.burghyart.com/uploads/1/3/1/8/131871772/vevelu.pdfIn PDF document text
    • http://files.thehumanfactorpr.com/uploads/1/3/1/4/131437873/964694.pdfIn PDF document text
    • http://files.inlandempireinjurylaw.com/uploads/1/3/0/8/130873708/1375171.pdfIn PDF document text
    • http://files.aaron-delane.com/uploads/1/3/2/3/132303068/9254021.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/1/0427/7790/3263/files/4133166382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/18607007871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/95420430198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/tubebobilizaxodojilox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/83667398125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/98671585888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/wolosokelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7739/4847/files/vetovubazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/23494603643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/71520019770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/99094303104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/kenepalovomu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7358 5768 bytes
SHA-256: c7626bac37d7c703b575b4cce7abc34856c752e18a2ab78112736215d8a386a3
font_01_sfnt_off0000871c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x871C 10328 bytes
SHA-256: 2cacd25231106e337588a23e6bae6ac79329df7a0f3337133019b9ae1a03b962

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