Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace264ec6487dce3…

MALICIOUS

PDF

38.6 KB Created: 2020-08-12 12:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b788ad548e2dc57838e31e9aefe33d8a SHA-1: be63533cee49d1f8bf7314decae3ffcabee2ce58 SHA-256: ace264ec6487dce3a0ad8de54b9439afd3f7ed594539071bc4cbc722f232d3b1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL, suggesting a lure. The presence of many external PDF links indicates a link farm strategy to improve search engine ranking for the lure. The primary malicious IOC is the redirector URL, which likely leads to 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.cc/pify?keyword=bohemian+rhapsody+piano+pdf+jarrod+radnich In PDF document text
    • http://files.loveletters.website/uploads/1/3/1/4/131454098/8211979.pdfIn PDF document text
    • http://files.karensartzone.com/uploads/1/3/1/0/131070859/8516276.pdfIn PDF document text
    • http://files.shadowcaststudios.com/uploads/1/3/1/4/131453484/pasixu_rajepekodug.pdfIn PDF document text
    • http://files.zportman.com/uploads/1/3/0/8/130874627/nejajedozufejanoxifi.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/1/0431/4185/7448/files/61456914165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5804/3807/files/cinema_4d_rigging_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/65688819141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/padigudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/map_of_the_world_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/losoxuvizagofuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/nazuximusijimiwarav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/94813212586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/7876558763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/gipewewibedopafikotifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9968/files/wibasov.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_off00005412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5412 5588 bytes
SHA-256: 06f95be49ae6ae3651ee0cd3253cec44406b3cf1b6be1fcf9abb1d606abd6334
font_01_sfnt_off000066f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 11788 bytes
SHA-256: 88481665a9349cf2e6ab13e84457ce7af90d8c8fe2cbf7bd6140c9545bd75a07

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