Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b4520b506babbe…

MALICIOUS

PDF

62.8 KB Created: 2020-08-05 19:37:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f3d43335d14f7553967eb5dc5eb7a1a SHA-1: d06a96374b6e49f13fbc235728059ec97482674a SHA-256: 33b4520b506babbe0af9fee9b9514ecdbe5e42b4829ea784199b1878274f86bd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Sikkim state lotteries' and a URL that matches the malicious redirector, suggesting a lure to trick users into clicking the malicious link. The presence of a malicious redirector indicates the likely intent is to lead the user to a phishing page or a site that hosts further malware.

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.cc/wb?keyword=sikkim%20state%20lotteries%2011.55%20am%20result%20pdf
    • http://vesufomon.dominiquelegendre.com/uploads/1/3/1/4/131438216/3532910.pdf
    • http://files.futureleaforganics.com/uploads/1/3/0/7/130739996/toxobefipik-melakuw.pdf
    • http://files.veteranshealthfoundation.com/uploads/1/3/0/8/130814055/7109617.pdf
    • http://files.elizabethlaude.com/uploads/1/3/2/6/132695601/xagob.pdf
    • http://files.newreach.com/uploads/1/3/0/8/130813906/2bfa425328f7401.pdf
    • https://cdn.shopify.com/s/files/1/0435/5332/5219/files/is_movavi_safe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/62962208513.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/48421243653.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/lirodib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/93578159580.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99744184538.pdf
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/8634094544.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/19474393197.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/fatuputofugowo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/xelidiluxigaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/varamotex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8251/4581/files/hindu_calendar_2020_south_africa.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/
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095cc.bin
926f01add2000c510baea3841faa9e0e0660f18db5f76d389194924b6d5f0e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CC 5564 bytes
font_01_sfnt_off0000a8ab.bin
a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AB 3720 bytes
font_02_sfnt_off0000b40b.bin
8fca3890c745fc8f3cce1af8e9d64b8512a5f1cfb4b6ffb4b2a6b05d16161f9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB40B 10136 bytes
font_03_sfnt_off0000d704.bin
337b256e58c48d5ca3c3ca41da881932d906a21e9aaf60fc40ef921e216d7b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD704 6300 bytes

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