Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa7f1743e6762bed…

MALICIOUS

PDF

51.3 KB Created: 2020-08-04 18:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29539179702bc691e4a726cebb111e47 SHA-1: ba7c003ebe49d29e8a05b5b9c58a3b94c8a18463 SHA-256: fa7f1743e6762bedd959ad5af3eb87db26c9376f96a00980974c70f7435bda00
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=maths+questions+for+class+6+pdf'. This indicates the document is designed to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering through a deceptive document.

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=maths+questions+for+class+6+pdf In PDF document text
    • http://files.kpquiltingstudio.com/uploads/1/3/0/7/130775867/8e50e.pdfIn PDF document text
    • http://files.peaksandpaddles.org/uploads/1/3/1/4/131452735/29203.pdfIn PDF document text
    • http://files.southernappalachianworkcenter.org/uploads/1/3/1/3/131384145/893774e.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/1/0432/9255/7467/files/41712212800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9027/2675/files/2016072351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/lixijoxesawot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/89733439935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/list_of_bsc_agriculture_colleges_in_karnataka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3749/8271/files/gewalurorobinomupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xivuvefolobupafegevamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/cookie_clicker_one_mind.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/92040576802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/arduino_uno_r3_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/woresuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/gimijapinatabetazonodex.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_off00008904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8904 5528 bytes
SHA-256: 67516b194c2f74c541e207c684f0d049a3b0e4fe335728a8e012ba20a984d701
font_01_sfnt_off00009bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD5 10668 bytes
SHA-256: dfaf31bf977f497be82bf7f70a3e8778f8e0a3bdc319895de5f0e2e98e5cf182

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