Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20a1a69c41d2d0e…

MALICIOUS

PDF

78.0 KB Created: 2020-09-28 16:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01204eff56b25f2d62dcc9c6e3c5f0b4 SHA-1: 2eff62b8f15f6b631776f71076dbbe7674febf57 SHA-256: a20a1a69c41d2d0e88d769862f4d444262f320c97e4975330f6ffdf65e5af4c5
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://gettraff.ru/mozel?keyword=noida+road+map+pdf'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility of the malicious link. The ML classifier strongly flags this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • 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://gettraff.ru/mozel?keyword=noida+road+map+pdf
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.pdf
    • http://files.dvrgeclothing.ca/uploads/1/3/1/4/131406344/revolemar.pdf
    • http://files.vnecessities.com/uploads/1/3/1/3/131384679/dudebujapama-zajaxikuxoge-berulosilepexo-wodidojefo.pdf
    • https://site-1037130.mozfiles.com/files/1037130/64304134696.pdf
    • https://site-1036751.mozfiles.com/files/1036751/33747742093.pdf
    • https://site-1036716.mozfiles.com/files/1036716/36028325570.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/lewigaponurorazavel.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/bauhaus_bela_lugosi_s_dead.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/jumble_answers_for_today.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/10461094038.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/aquel_fuego_que_cayo_a_120_una_vez.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/distrofia_canaliforme_de_heller.pdf
    • https://cdn.shopify.com/s/files/1/0457/0772/2908/files/tawinexaduzapunun.pdf
    • https://cdn.shopify.com/s/files/1/0437/8673/1681/files/vegirakezupifalogisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2825/files/zepipokawu.pdf
    • https://cdn.shopify.com/s/files/1/0449/0382/5575/files/67150874307.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/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba97.bin
b0b5145e831e196e5817249aadb71cf9ad0e9ea5241d3f6a862a45cbcd6f1e78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA97 4428 bytes
font_01_sfnt_off0000c996.bin
1d2a0772307807940d36ce752d236cfaf629ff891258567e0da3ea2095288059		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC996 10756 bytes
font_02_sfnt_off0000ee90.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE90 16164 bytes
font_03_sfnt_off000103a7.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A7 4324 bytes
font_04_sfnt_off000111a8.bin
3aa44deb70b7eb5240cb88ff18c00c452ba88f40422c4328d1dd382e0870e87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111A8 7172 bytes

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