Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be74461b90943fa…

MALICIOUS

PDF

55.7 KB Created: 2020-08-03 19:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8251e037106c0060ca0bbc7053184da3 SHA-1: a679a3c9fd82534c1de5e7ce3cefec4bb6572bfe SHA-256: 2be74461b90943fa083d6b31938ffb8c041569a8c0017eb5792679cab89c85c8
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=vlookup+and+hlookup+exercises+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. No scripts were extracted, limiting the analysis of direct payload execution.

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=vlookup+and+hlookup+exercises+pdf In PDF document text
    • http://files.blueskiesforchildren.org/uploads/1/3/2/6/132682640/xagoxe-kosajevipesiko-duwubev-ledev.pdfIn PDF document text
    • http://files.sandyfeetandtastyeats.com/uploads/1/3/0/7/130775195/vatumumenalurez-gofaris.pdfIn PDF document text
    • http://files.whitridgewellness.com/uploads/1/3/0/8/130814346/bedenobozexora.pdfIn PDF document text
    • http://files.anclotedesign.com/uploads/1/3/2/6/132682882/tazonowuni.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/1/0429/9050/2051/files/45668670446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0481/files/fixemofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/unusual_architectural_thesis_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/gazamuvagavarodenal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2467/0105/files/gorefukezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/15840319190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/10171127290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0939/1261/files/algorithm_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/9810266912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3406/6600/files/ac_dc_are_you_ready.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/27034751429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/gagekegusuterufevoparur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8968/1822/files/mutotir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9288 5340 bytes
SHA-256: cd7f9b0b53ec35f92862883b0a7951bd21347c31f015ed313b0a7803c062a46a
font_01_sfnt_off0000a4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AC 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000ad3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD3A 10544 bytes
SHA-256: a8322f8f3d119c504471cd086da28215629a10616c4b8c9d36b76fdfbe1391aa