Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4bd4a7a58cc74a3…

MALICIOUS

PDF

97.3 KB Created: 2020-08-23 16:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1dd4b27148095c57fc986212823f579 SHA-1: 9553c0e19564d94a4e7133b682afdd34ea9d29a7 SHA-256: f4bd4a7a58cc74a39f60997c663c5b6758cbfeb3082855dd12004910712d5b24
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure related to a 'Novartis annual report'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive document, leading to a malicious redirector.

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=novartis+annual+report+2005 In PDF document text
    • http://files.stitchntimesd.com/uploads/1/3/0/8/130874588/luxaloxipew-nubujaxupe-komoxezolun.pdfIn PDF document text
    • http://files.vicksburgbands.com/uploads/1/3/1/4/131408942/54a97978a5.pdfIn PDF document text
    • http://files.3sooglobal.com/uploads/1/3/1/4/131437233/3820637.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/1/0440/2790/4165/files/ctet_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/80428985645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/64702368931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/36507223112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/gaporitufosugeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5206/4155/files/3234038120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6115/files/54064582775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8624/1187/files/garijugotebugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/underground_concrete_water_tank_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5241/6672/files/77831604260.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_off000132b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B8 5240 bytes
SHA-256: 13478b39ed84e58141a173057992d07a149c73075775c4b2edc54562009ac6be
font_01_sfnt_off000144a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144A8 16716 bytes
SHA-256: 02a1afbecc26b264953534d0b1ba4e58b4e62d36dd775851e8ab913765872b8e

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