Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d01314c149bddf…

MALICIOUS

PDF

39.8 KB Created: 2020-08-17 06:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0de32faf85428e301a1057c1108072b4 SHA-1: ebe87ed9c7d5ea9a0fbcb5cc98585711e315622d SHA-256: 18d01314c149bddf50028c1d72daaa47276489dd52fee334258facc453d161d1
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. A critical heuristic identified a link to a known malicious redirector, https://ttraff.ru/pify?keyword=aadat+song+ki+ringtone, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=aadat+song+ki+ringtone In PDF document text
    • http://bunapojap.mrswagner.net/uploads/1/3/0/8/130814328/8980537.pdfIn PDF document text
    • http://dodab.missbilovsky.com/uploads/1/3/0/8/130814471/wulajadidofawonut.pdfIn PDF document text
    • http://files.goldbergiryami-taxcert.com/uploads/1/3/0/7/130775277/2874932.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/1/0440/4147/0117/files/vumamiterozuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/sertifikat_akreditasi_universitas_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/63511106279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9127/0563/files/powejem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/dichiarazione_sostitutiva_attestante_la_conformit_all_originale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6067/2165/files/jubexubip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/arithmetic_sequence_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/riwizuduxepamewigij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/zugejabatubimujajusawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/jibopixukavuzu.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 6

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_off0000546b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546B 5016 bytes
SHA-256: 496b499f0013f60fcf14171e5c451330d136c1f1aea8fd4c4550ae9871bd5036
font_01_sfnt_off00006587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6587 14272 bytes
SHA-256: 0e046083f49226f9a4720dced813dee00bb3e3d93ee5d6d7b3a82438a61ec7fd

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