Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba438c95f41911a4…

MALICIOUS

PDF

148.2 KB Created: 2020-08-09 07:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7dc5664b739abcd92c5d87d12dd897e SHA-1: ce21d7025e03620df7b4561f6d1c8941e5dc6cda SHA-256: ba438c95f41911a4917ff7af9c20d25787b6678198df8ff10d2429140fd851fb
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, https://ttraff.ru/pify?keyword=adolf+hitler+books+pdf, is the primary indicator of malicious intent. The document body, though heavily obfuscated, also contains this URL, reinforcing the redirection attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=adolf+hitler+books+pdf In PDF document text
    • http://files.macdonaldrmsa.com/uploads/1/3/1/3/131383444/e765c0cf4.pdfIn PDF document text
    • http://files.trinitybengals.com/uploads/1/3/2/6/132681836/wozenurufabubixeg.pdfIn PDF document text
    • http://files.ladymaeimpressions.com/uploads/1/3/1/3/131379434/ba398.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/1/0428/2135/3635/files/deturo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/tugetirebotozujivuguwof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/50725957973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/pexedixovinodaxojopufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1158/7752/files/devim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2413/7890/files/71773190522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/21242405209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3703/8494/files/38043360342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/59090606224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/50582023466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wowivitotorinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/mental_ability_test_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E876 10184 bytes
SHA-256: 23b2118a7f89c5670ab66a6553d98f52d81a14a190fdc315c3aa00b1e4898564
font_01_sfnt_off00020a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A67 5112 bytes
SHA-256: db875ab61b07808d95af558aa1e15b40b2ce2ffb78e611efa41f59cf9d934c4f
font_02_sfnt_off00021bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21BC3 11528 bytes
SHA-256: 685152cbc75e50ab5538afb8e54393f71772a5be92ee11455df5eaa4675d5fdf

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