Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a4015f98c39223…

MALICIOUS

PDF

72.1 KB Created: 2020-08-19 20:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 326b4255759351a64da72bb9e480227b SHA-1: 11bbb10e65391e47e22adaaa60f272e513c62af1 SHA-256: d1a4015f98c39223768014b47047a5f737a9ee5e8b76377d0dffe548e080967f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=mahiya+mahiya+adnan+sami+song'. Additionally, it exhibits characteristics of a PDF link farm, with 24 external PDF links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL, suggesting an attempt to lure users to a harmful site.

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=mahiya+mahiya+adnan+sami+song In PDF document text
    • http://files.reinamorapuertorico.com/uploads/1/3/1/4/131409200/882628ee57bc4.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/1/0434/1514/2567/files/whirlpool_dryer_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/delifogexizivelanigup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/lomulopudevipefosuxagem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/bebiwaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5852/7394/files/79384792809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/4018247330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/bebuzuzepeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/81053316346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7867/4584/files/acids_bases_and_salts_worksheet.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 8

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_off0000c622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC622 5216 bytes
SHA-256: 3db6dbbeb7a0fe57acd0c0828330c2590a46011fd8d4d8728d7cffca467c9125
font_01_sfnt_off0000d7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CB 11048 bytes
SHA-256: d9b9e8c5a812783f0d8b9cf242a93cffa74684d5890de2386de888637eac6770
font_02_sfnt_off0000fdd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD5 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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