Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc47a5948febc543…

MALICIOUS

PDF

47.7 KB Created: 2020-08-14 08:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92b9753e84f3a4c5d029ecff10844433 SHA-1: 78ef8bd66e8eb0972abcd6c248b2832a978529c5 SHA-256: dc47a5948febc543fe9b79ee81a4177a1397f9aacf9f3e1f4a33638aca61e164
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/wb?keyword=rehras%20sahib%20pdf%20sikh%20zone'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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/wb?keyword=rehras%20sahib%20pdf%20sikh%20zone
    • http://files.sarahcamillewilson.com/uploads/1/3/1/3/131383456/titalafumuwiza.pdf
    • http://files.wadofoo.com/uploads/1/3/2/6/132695476/dejifi.pdf
    • http://files.myscrubsandmore.com/uploads/1/3/0/7/130738996/danopigadesanu_lisakemekoko_nuvige_liwiwef.pdf
    • http://files.gracejiang.info/uploads/1/3/0/9/130969080/zuduxilawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/49810856330.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/giwoto.pdf
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/vupiwejutugefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/appositive_phrase_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/40966529285.pdf
    • https://cdn.shopify.com/s/files/1/0437/8145/6023/files/laxowipediwaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4637/9426/files/19198738333.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/42440527364.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/zixikiboraxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/51889401391.pdf
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/sadiluw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2523/6121/files/9713427839.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005930.bin
8db23e060c9f8a7f8151c0679c18a5b2050dcd67bdda7aabed12e13b3faa1a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5930 5360 bytes
font_01_sfnt_off00006b61.bin
6ce3ed3d0cf168fbf74d6eb321148d5efc31cda11559831b77020f7d4c9f4c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B61 3740 bytes
font_02_sfnt_off000076db.bin
9c419199bc959ba1845bab7f416c9c4312297fd2cc2c080f6e5e28ab210c3414		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 3160 bytes
font_03_sfnt_off000083eb.bin
cc75ca32aff50820ebaa06eeaeeadd950fe6d60df3ea746c5608bd92e7183552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 14448 bytes

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