Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd9cfcd6a4e066e3…

MALICIOUS

PDF

51.2 KB Created: 2020-07-29 19:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 736e335f7f4729ae6ac9f94bbd76ec72 SHA-1: 35ed146269f68d6f5c630a0ab7856c554b6b977b SHA-256: bd9cfcd6a4e066e31da3f63e52db893dda0dfb81be6f1c213f774d8c9419d1f3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites. The presence of many external links, including those hosted on Shopify, indicates a potential SEO poisoning or link farm tactic to distribute the malicious URL. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

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.cc/pify?keyword=complete+laboratory+apparatus+and+their+uses+pdf In PDF document text
    • http://files.the24hourccna.com/uploads/1/3/1/4/131453498/revolerolodome-tupukafogolu-potipebapelu.pdfIn PDF document text
    • http://files.fbazin.com/uploads/1/3/1/4/131437516/xugaw-pijojisobokez-lazevezi-faxexikev.pdfIn PDF document text
    • http://files.mamagonenatural.com/uploads/1/3/1/4/131437508/f7877.pdfIn PDF document text
    • http://files.fallscreekcc.com/uploads/1/3/2/6/132695535/wifol.pdfIn PDF document text
    • http://files.anandahairlounge.com/uploads/1/3/0/7/130739284/8b679fe1c.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/1/0433/4937/7177/files/rutudira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/7160087702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/bijuguzejoladoxanaxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/89297267644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2892/3046/files/73469257096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9333/4947/files/bififixekipireforikama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/zajekalemegadasanarurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/xowenolov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4181/4693/files/67120493770.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/1/0429/9712/1178/files/57545749743.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 7

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_off00008b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B07 5428 bytes
SHA-256: e3ace1a70c46fbb6bdf7e201680a0d19ae2c336ba7cce7a7d00b48a211b8d199
font_01_sfnt_off00009d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D48 10008 bytes
SHA-256: 868841a9138f32f9a8f508a9484bd8f8ab6bce5e9d10987c370dc3d8a2c03dd2

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