Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f3a9499dfcf716…

MALICIOUS

PDF

465.3 KB Created: 2020-07-31 07:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86cb9ab1fe94208d3595c66e594d849e SHA-1: 857594042318a8ee91881eba7ee7ff489eacccc5 SHA-256: f0f3a9499dfcf716c23f9ae8aeb679b95fc9702f26523fee6480947f54f8bdde
134 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to ttraff.ru. The document body, though heavily obfuscated, contains text related to 'read bastard out of carolina pdf' and metadata indicating it was generated by wkhtmltopdf. The primary malicious indicator is the embedded URL, which is known to host malicious redirectors. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9843

Heuristics 4

  • 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.
  • 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=read+bastard+out+of+carolina+pdf In PDF document text
    • http://files.orlistrone.com/uploads/1/3/1/3/131383743/gizegebixafev.pdfIn PDF document text
    • http://files.lessons4learners.com/uploads/1/3/2/7/132740536/9970031.pdfIn PDF document text
    • http://files.herbaceouslyurban.com/uploads/1/3/1/4/131406369/jajebetukikape.pdfIn PDF document text
    • http://files.rgcconline.com/uploads/1/3/0/9/130969305/8283940.pdfIn PDF document text
    • http://files.cupcakecafe.me/uploads/1/3/0/7/130738988/xumixetidibevoxelob.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/1/0431/4388/9058/files/nugitawugufigonug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/8210674613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/ligajasoxigosugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/jozeberosagodejiwoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2232/6696/files/lipepoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7883/5606/files/saramewom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/69721718950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/45877982254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/72803348515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/58307188986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/57895042577.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_off0006f901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F901 5180 bytes
SHA-256: aa192011d0d7f084322a597ed2761b9479b79343b15438b86120e7aa2977e5bf
font_01_sfnt_off00070aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AA7 13312 bytes
SHA-256: 5e9ba63959b057075cc3c67850a643f44044b65ae93fe6c746b661e89c05b9c3

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