Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ba406977c91eb3…

MALICIOUS

PDF

55.9 KB Created: 2020-08-03 03:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce9b5055d820bac4a0ac468af6b22334 SHA-1: 455957d0d5398e991a2ac10286e9323132671536 SHA-256: a3ba406977c91eb342f76363a32449c61ceafc7bce64e06aa08235914716489c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for phishing or malware. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to host 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.com/pify?keyword=netflix+dvd+queue In PDF document text
    • http://files.neal-postma.com/uploads/1/3/1/4/131452838/divazuwuzafajowi.pdfIn PDF document text
    • http://files.worcestershireciba.com/uploads/1/3/0/9/130969576/vosoxekigotep.pdfIn PDF document text
    • http://files.wxrthymxdia.com/uploads/1/3/1/3/131379296/vezonenusiluj.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/1/0428/0595/2671/files/18784098861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/77713985839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/56911514326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/23132048092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5335/6955/files/64711857178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/88836996359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/36835524502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7229/files/sikikuviwuboxojuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/35400027727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4915/6757/files/bejofizomuwuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/61827118260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/sulenusif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/garexixikuzuzede.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8948 4640 bytes
SHA-256: d721ba3249635cab6c9297e0165d897bb2c0f1800840d1034c627bf0607c51fb
font_01_sfnt_off00009938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9938 10396 bytes
SHA-256: ac3e2613a3d60782c3d66239c187491f334f123fd43ab9f5600940417d0fc70e
font_02_sfnt_off0000bcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF8 16184 bytes
SHA-256: 561e8f284f648fde65f4c7bcb0e8bf76dd592db196aece0eac460b34838be678

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