Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9fefe7d282552a…

MALICIOUS

PDF

51.4 KB Created: 2020-08-22 19:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36c282b9181b112746fc9f588034e4d9 SHA-1: 38277957f032bfabf5e59b4bf1a1f7417d0df465 SHA-256: 2e9fefe7d282552a5cf8fc479b9303435703328671d4fe19c828b8c778495d92
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains numerous embedded links. A critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is part of a link farm. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware delivery. The document body contains garbled text but includes the URL that triggered the redirector heuristic.

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=microsoft+access+programming+pdf In PDF document text
    • http://nedep.compliancemastersllc.com/uploads/1/3/2/6/132683008/xajiterikorabof-sodupekosusax-gofagozoxuba.pdfIn PDF document text
    • http://files.main-global.com/uploads/1/3/0/8/130813037/rufajiloxu-timonexuwi.pdfIn PDF document text
    • http://files.ghbilling.com/uploads/1/3/1/4/131437883/letufoxemuviwujene.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/1/0433/9502/3013/files/difference_between_flat_slab_and_solid_slab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/23073692851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/32813938689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/sprint_text_message.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9648/2727/files/examview_test_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/51756090248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6743/9259/files/athletic_body_in_balance_gray_cook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1449/6161/files/kidokazegitanes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9023/1974/files/analytical_reasoning_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/25280105495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4912/2972/files/audiovisual_translation_theories_methods_and_issues.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 8

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_off00008bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBD 5448 bytes
SHA-256: d5df6f7097ef4981f5f961a4cbcf0bb5db07cf32f37836583c283e4b9b6207e2
font_01_sfnt_off00009e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2E 10128 bytes
SHA-256: 3da01634a70059e42e3e3af2491e4970bca72f2e980e30b39611def2b5c9d297

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