Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c64dfbba5171a3…

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 11:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15442719130195d59ce484cbf7c31513 SHA-1: c5e360fa4f49d9cb7dc9bdf4d2cfa4e23eee0afa SHA-256: 96c64dfbba5171a318b559c697808462ef998d97704b7cf71ab2ccddb7d8ee25
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains URLs that are also present in the embedded link list, suggesting a coordinated effort to lure users to malicious sites. The presence of a malicious redirector indicates the likely intent is to funnel users to phishing pages or download further malicious content.

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=informal+email+writing+samples+pdf In PDF document text
    • http://faropeso.bookpod.com.au/uploads/1/3/1/6/131607600/9f6983d.pdfIn PDF document text
    • http://files.amussispainting.com/uploads/1/3/0/7/130740148/c4c9371e.pdfIn PDF document text
    • http://zogadikuj.busarovasart.com/uploads/1/3/2/8/132814930/2276017.pdfIn PDF document text
    • http://files.taichifuture.com/uploads/1/3/1/4/131408024/silitinedojijezinoje.pdfIn PDF document text
    • http://files.mildredsfatburgers.com/uploads/1/3/0/8/130874526/sevuvizepufitufobi.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/1/0430/7759/9383/files/jubodamekifegoxurigej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/brick_bonding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/anti_afk_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/togugatusan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/46136165831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/kusiripovebawigamujidawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/ffxiv_act_overlay_plugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/66963979115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9092/0099/files/5128806205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4003/8302/files/losegeg.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 5

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_off00006212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6212 5392 bytes
SHA-256: 6efcaa4655a380332f3c2d0b63190a0479faf4f3db79f1d0903fe84e9d28360d
font_01_sfnt_off00007467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7467 10484 bytes
SHA-256: 12819edb5f72aed414661cc44eea983fc16459093e784ae9f9929efbbbc88002

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