Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e5faf9d29523ae…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 08:58:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a9657650b9dc2994a3f8dec74f4c3f SHA-1: e8e762e9614ec4041b236486c8d864f020135a6b SHA-256: 52e5faf9d29523ae03cad5638a7bd72341a4673d0854acf79daa2eaa73d518cb
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector at `ttraff.com`. This is a common technique for distributing malware or phishing pages. The PDF itself is generated by wkhtmltopdf, suggesting it was programmatically created to host these links.

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=jurnal+aterosklerosis+pdf
    • http://files.angelhairwiggallery.net/uploads/1/3/1/0/131069890/7366999.pdf
    • http://files.ewireasonsounds.com/uploads/1/3/2/6/132682106/vuxadubuf.pdf
    • http://files.littlesilverems.org/uploads/1/3/1/4/131406592/d4326.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/marginal_costing_formula.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2214/files/86674208187.pdf
    • https://cdn.shopify.com/s/files/1/0432/0624/6557/files/bulletin_de_paie_simplifi_2020.pdf
    • https://cdn.shopify.com/s/files/1/0444/5110/2887/files/chinese_to_english_translator.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/kalobusibedupif.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/nukem.pdf
    • https://cdn.shopify.com/s/files/1/0431/8769/9876/files/boranes_and_carboranes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/pajusetikusibugidit.pdf
    • https://cdn.shopify.com/s/files/1/0440/8462/5558/files/teliva.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/98702895874.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bd3.bin
68fbff3233d01630f8c8fa78c734de37b3ccf6a0a6f10e3350b20ffc55244307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD3 4968 bytes
font_01_sfnt_off00006cc4.bin
88d075654fc976e6edbb175e9b8aad47d433ec32f0f92b136679d50b2af690e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 10428 bytes
font_02_sfnt_off00009064.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9064 4324 bytes

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