Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb838f222e0006cd…

MALICIOUS

PDF

47.3 KB Created: 2020-07-28 11:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b796cacd5896c9a9afc71a069b9bb37a SHA-1: 059b59303d96fa9adcfe0bcca6da31fca421b7bc SHA-256: eb838f222e0006cd1a46846a11c299a773cfc7e5b8da0751646ae80996f59f54
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=asrock+z77+extreme4+overclocking+guide+2500k, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain metadata related to the 'asrock z77 extreme4 overclocking guide 2500k', suggesting a lure to entice users to click the malicious links.

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=asrock+z77+extreme4+overclocking+guide+2500k In PDF document text
    • http://files.oubria.com/uploads/1/3/1/6/131606733/rimunati.pdfIn PDF document text
    • http://files.yoyojake.com/uploads/1/3/2/6/132695732/aa0cdc.pdfIn PDF document text
    • http://files.marinlivinghomes.com/uploads/1/3/1/8/131871871/folonakaketote-jegowa.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/1/0429/8145/8069/files/kazekufuberekosoxuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/7615180827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/fanewoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/7065211092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/jikufuwifikalek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/gagobaxiledes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/tekuwurog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/61099173858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/30660845285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/38020784480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenixuraxolitater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1067/9203/files/pemuse.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_off000078dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DD 5728 bytes
SHA-256: 0d77c76257e47bc78d08da148bd0b867da0c16e3bb8e6412c9c9108000399059
font_01_sfnt_off00008c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6F 10376 bytes
SHA-256: 2bf8b9211e1e4fa6a3fbeec7060dbf5b1691d8c83d2b67f152a7eab22c37ea9c

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