Malicious PDF — malware analysis report

Static analysis result for SHA-256 376f266b43fb08f2…

MALICIOUS

PDF

52.1 KB Created: 2020-08-10 15:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f4cf0dddfd32217128392f779c4062e SHA-1: bb8e666e0e935c6aad1647626246d0abd01912ea SHA-256: 376f266b43fb08f2ce06f12564246451a89555416413d44932d2aaeef056b0a1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and numerous other links, many hosted on Shopify, which is characteristic of PDF link farms used for SEO poisoning or to obscure malicious destinations. The primary intent appears to be directing users to the malicious 'ttraff.ru' URL.

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=manusia+adalah+makhluk+sosial+pdf In PDF document text
    • http://files.hedgerow-herbals.com/uploads/1/3/1/6/131637773/bibaki.pdfIn PDF document text
    • http://files.nikosmarinos.com/uploads/1/3/1/4/131406831/2278749.pdfIn PDF document text
    • http://files.foodium.co.uk/uploads/1/3/1/3/131398526/masabufakukisofewasi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/xosalifagudopetigejapopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/41021153408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7114/3078/files/sotogirapesiruwapelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/tigisesirikekufodezezopis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/dusovajonedenud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/lovaxepos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3823/6062/files/24192306053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/powime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/27829810265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 4940 bytes
SHA-256: 5f07a2ff6fc01fe82b40bb5db47d91bb700450c29c9660fe540034affe35c748
font_01_sfnt_off00007a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7D 9848 bytes
SHA-256: 06e71e9428fbff0417f8b0e4f3469a1764a386457f309b17ec4ed3dc096ea858
font_02_sfnt_off00009c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C55 17284 bytes
SHA-256: a226eaaa5e649e0028fc1117e087bf3bc2980a71076528a684a9bbfc3b401227
font_03_sfnt_off0000b522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB522 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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