Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbcb2dd2b9ce607…

MALICIOUS

PDF

39.2 KB Created: 2020-07-28 11:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc217f188d69db7a39b8076e9977f4b8 SHA-1: be5f4af9dd32dcfb19decee826d3bc0b90df2f15 SHA-256: fdbcb2dd2b9ce60789f20dcf5515e4822db40105509a1739eb0d853d5200863f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'piano music' and application metadata, suggesting a lure. The presence of numerous external links, including a link farm hosted on Shopify, indicates a likely attempt to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=best+relaxing+piano+music In PDF document text
    • http://files.tnttoday.org/uploads/1/3/1/3/131383462/nixaxoxafobigo.pdfIn PDF document text
    • http://files.michaelbradleyatty.com/uploads/1/3/1/3/131379246/8737607.pdfIn PDF document text
    • http://files.hellovetmed.com/uploads/1/3/0/7/130775286/funajujijal.pdfIn PDF document text
    • http://files.westernwilcodemsclub.com/uploads/1/3/1/3/131379266/joteridarazupo_pivumujejukuxax_sumoxojuxegivun.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/1/0435/3510/6200/files/rarikoxifilale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/potapafiledebosulexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/85372369981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8487/files/79521361972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/38045053330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/vumetubiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/wefesuzoligubuvam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/pedavarukode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9542/4165/files/17303774411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/dudivokosujaruzijuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1786/9211/files/jarelenipofajaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/8218917909.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 8

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_off00005bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAC 5252 bytes
SHA-256: 7ffcd6d96fc941301cb2a578168e748b4e4d6e81218a2ccab1c99b80ff924d16
font_01_sfnt_off00006d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D77 10008 bytes
SHA-256: 5241d7ad8fcf8e055ce60b8bc631d13a952bd70a9e48035a8ccdd9de8a26a2f1

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