Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d205b194f3d4652…

MALICIOUS

PDF

42.7 KB Created: 2020-08-13 09:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89f47a273fe9b0963eec3e7d86788f51 SHA-1: baaae1be2c228d340049e93a8f510ef8a3c10e23 SHA-256: 0d205b194f3d465243dd1de732b3d71fad15fc57c4bfeb8402e525e19f5fc239
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to link farms designed to manipulate search engine results. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.ru/wb?keyword=bible%20study%20guide%20for%20youth%20pdf`. This suggests the document is part of a SEO poisoning or spam campaign to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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/wb?keyword=bible%20study%20guide%20for%20youth%20pdf
    • http://ribifefes.bigredlocksmiths.com/uploads/1/3/1/4/131453950/6f41299.pdf
    • http://kozifimef.blind-faith-ministries.com/uploads/1/3/2/3/132303382/pojitemulodogofeken.pdf
    • http://zuxuxi.adamhankinsart.com/uploads/1/3/0/8/130874422/d0553ace28b5b06.pdf
    • http://files.capitalsrugby.com/uploads/1/3/0/9/130969148/tafugewibibupomulot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/zupax.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/67739185262.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/lebopivaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/4249/5899/files/rama_raksha_stotram_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/zadoduju.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/58820220147.pdf
    • https://cdn.shopify.com/s/files/1/0441/3590/7480/files/4277939269.pdf
    • https://cdn.shopify.com/s/files/1/0431/5270/3645/files/seropujuvogir.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2957/files/bcom_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/learn_spanish_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/sopanov.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fad.bin
309efd3e2f2e1556241cde4d08c1b4726c17399819468576df5b7c75f37c150b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAD 5384 bytes
font_01_sfnt_off000071e9.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E9 1800 bytes
font_02_sfnt_off00007a77.bin
e9a69dc96406549b4c13a9c0b6553554e1252b4d465ff464656fa2e5fc9ffbb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A77 10400 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.