Malicious PDF — malware analysis report

Static analysis result for SHA-256 9906556295f72901…

MALICIOUS

PDF

61.4 KB Created: 2020-08-11 00:55:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0fa2f657dfa65e7d217b260db19fe4e SHA-1: 19a19ede0f98a8035ddb7a50eeac742e5f42c488 SHA-256: 9906556295f72901cc3616f6ec212b27b119c93030e57b13faaa7e20ea0c4faf
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'carrier air cooled chiller catalogue pdf' and the authoring application 'wkhtmltopdf', suggesting a lure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware-hosting site. No scripts were extracted from this sample.

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=carrier+air+cooled+chiller+catalogue+pdf In PDF document text
    • http://xerepal.peterboroughplayers.org/uploads/1/3/0/8/130814238/tuxawuvaf_sesama_sopinojapexaje_merak.pdfIn PDF document text
    • http://dakogus.jackyabbott.com/uploads/1/3/1/0/131070872/gudeposixosun.pdfIn PDF document text
    • http://taxuvivil.redemptionmemphis.org/uploads/1/3/1/0/131070590/saromolebexoxiv-worikuxedopulu-ranopapidijosu-kekoluwoni.pdfIn PDF document text
    • http://files.wlcbands.com/uploads/1/3/1/6/131607712/2769e0d94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/zipekubelaparapoxazek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6992/3743/files/fetitidajaveda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/mijobotatevigemejoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/sanavomosipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/peguxegom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0147/8307/files/cardiology_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/translate_english_to_swedish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/66573155345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/2391549518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/zunemazagineduzesatusi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D18 5036 bytes
SHA-256: ec18783b98f18995893c0e8e165fc6df502f4b78119d743e818d2d557c1dc49b
font_01_sfnt_off0000ae55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE55 13908 bytes
SHA-256: f059a945ed00a34e60a9516a435d213a523d4021e33e03cf8f0f7fe6f7d2c181
font_02_sfnt_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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