Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc50f196642df946…

MALICIOUS

PDF

73.9 KB Created: 2020-08-25 06:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 482620b4ba6c18ab9795ec21a5de4ed2 SHA-1: 98cdb74c303d549fa760a38e986482040ebb0821 SHA-256: bc50f196642df9469f729231c83ca238627e5e086779244fc5927a4edb372765
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=central+african+history+notes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links but one critical malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. The primary attack pattern is redirection to a malicious site.

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://ttraff.com/pify?keyword=central+african+history+notes+pdf
    • http://files.scifimq.org/uploads/1/3/1/4/131453335/kafodufefotid.pdf
    • http://saren.mariaohaver.com/uploads/1/3/1/6/131606758/9fac5d4872.pdf
    • http://files.shidokanatl.com/uploads/1/3/2/6/132695719/wazamebadadazut-togumov-dofipokorebabub.pdf
    • http://voxuvu.youthengagementplanning.org/uploads/1/3/0/7/130738629/987975.pdf
    • https://cdn.shopify.com/s/files/1/0440/1224/1046/files/29876512443.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/21439028313.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/67067098490.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/sizefeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/40350909752.pdf
    • https://cdn.shopify.com/s/files/1/0462/0134/0057/files/3472897035.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/10522823151.pdf
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/bidabi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/lerujuvolumipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/tupac_alben_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/2212/7004/files/pharmacology_of_cholinergic_drugs.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e36d.bin
f75be9e8d538b22f246ec79bc4e33f60adeceef7acbbf46a24b8d9279880e3a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE36D 5248 bytes
font_01_sfnt_off0000f540.bin
9a4e313aa16289319b51487d7066eab9a349e134cb98bfa7a68c75aa93acdfea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF540 11212 bytes

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