Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3aaab4bf5793e47…

MALICIOUS

PDF

37.8 KB Created: 2020-08-21 19:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ce0307ba8609eed27e82446c3ecab07 SHA-1: fb7c136f6885e79b0e8ec48d8201c75ee40a910c SHA-256: c3aaab4bf5793e4703249ae2e828f7f0ae88f523fe5090b653ca15d470be1e24
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute malicious content through numerous seemingly benign links.

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=computer+application+software++free In PDF document text
    • http://files.painttownred.com/uploads/1/3/1/3/131379615/40948.pdfIn PDF document text
    • http://files.dappsinfintech.com/uploads/1/3/0/9/130969265/cca6a.pdfIn PDF document text
    • http://bupumil.vailvalleybaptistchurch.org/uploads/1/3/2/7/132740580/0ecad9030626.pdfIn PDF document text
    • http://files.deanandkingsprfirm.com/uploads/1/3/2/7/132740836/jujijoreresem.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/1/0464/7868/8408/files/physics_geometrical_optics_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/demuloriwozufil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/disunugiwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/lakosasejodugurifazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6011/8175/files/maths_formulas_for_class_10_ncert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2653/8911/files/inner_bonding_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/93955811415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9222/0829/files/oxford_dictionary_of_biochemistry_and_molecular_biology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/49461001007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/bapuponasuvibisitiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/nefomasenigefofaxuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/11766255851.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 6

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_off00005707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5707 5160 bytes
SHA-256: ba8fdf74840969de47e7c236927d6d567e754a23c3fbc65273fc78f1a566d3da
font_01_sfnt_off00006889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6889 9936 bytes
SHA-256: 47f0548bf745583d810406bd3374ae78a3081234a540942886b1b5ee31985c79

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