Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f00b4d5ba33fe4d…

MALICIOUS

PDF

47.7 KB Created: 2020-08-07 20:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3695c9410c9b2ad2ed87daefaa117f90 SHA-1: 485b09352e02008be7a222ee8fbfb3ca15c7f065 SHA-256: 9f00b4d5ba33fe4dbf3b77ca093fc1d28f896cb4d8c084825a4443f985423947
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=amar+ujala+epaper+allahabad+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, also contains the primary malicious URL. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=amar+ujala+epaper+allahabad+pdf
    • http://files.vanfiretrust.org/uploads/1/3/0/7/130775828/2868592.pdf
    • http://files.themotivationalshop.com/uploads/1/3/1/0/131070527/8665794.pdf
    • http://files.voiceofgodrevivalsministrie.org/uploads/1/3/1/0/131069887/jimetugejenodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/jacksmith_armor_games.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/50498464612.pdf
    • https://cdn.shopify.com/s/files/1/0432/8390/6724/files/bexukoluduzotifariku.pdf
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/pupujoperefovogarumixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/dirimomuvefa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70945418412.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/99135591942.pdf
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/gosujililezibivobeduzux.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/53027005033.pdf
    • https://cdn.shopify.com/s/files/1/0435/1092/3423/files/bimoxaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/lonoboked.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_off0000527c.bin
b3c7782e3e68338172c959b2820dd23a9ec37edd439da5b2c5df1d4aeddc3124		 pdf-font-stream PDF embedded font (sfnt) at offset 0x527C 5308 bytes
font_01_sfnt_off00006455.bin
9f8b21b664bcc1271d975df6c55a4c9be5a77c5b357cd3ea89f17552b59cb4fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 10216 bytes
font_02_sfnt_off00008791.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8791 16164 bytes
font_03_sfnt_off00009ce2.bin
7241c5c6b0256b43e14f32ae064a98cfd9d2fa5e5991fffc8674c84f73a477b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 5768 bytes

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