Malicious PDF — malware analysis report

Static analysis result for SHA-256 2309a76c1720e27f…

MALICIOUS

PDF

52.6 KB Created: 2020-07-30 19:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7dda84ec2ba95fd22226e6a2bafd66cd SHA-1: 1de2d1446366de4e901b0a671629b393f6e02575 SHA-256: 2309a76c1720e27f0f210069c8ffbd33a38e950ad1bda0ceae61cfddc99fbcf3
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'book pdf download', suggesting a lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=baps+bal+sabha+book+pdf+download, which likely serves as a gateway to further malicious content.

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=baps+bal+sabha+book+pdf+download In PDF document text
    • http://files.just5minutesaday.com/uploads/1/3/0/8/130874250/1b9966318dc7.pdfIn PDF document text
    • http://files.obxchirothrive.com/uploads/1/3/1/6/131606094/gutedinaxada-fedovobe.pdfIn PDF document text
    • http://files.vickycavanagh-hodge.com/uploads/1/3/1/4/131452740/f6950613.pdfIn PDF document text
    • http://files.reconcilingcircle.com/uploads/1/3/0/7/130740553/dojom-vizigerodu-mizetifa-fixut.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/1/0431/8475/0747/files/fobuwelegivawurifip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/89731778430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/8335903124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/33680839003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/gurutixeladoriseki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/gopuxikuwawizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8964/9054/files/30801291763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/sebezegusogowagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5555796470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/30397522667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/38034500943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87899810879.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_off0000909a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909A 4920 bytes
SHA-256: 03d99292ffafb04c9bbfc45103ae22c95231c4f8df1729906413e404e38e185c
font_01_sfnt_off0000a146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA146 10596 bytes
SHA-256: a538d588472e66947af757588fb36093386fd8d7ddca17b35acab2493ce34e44

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