Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd55c09e6f56d579…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 11:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6399d36202db8d006458777a06ddd77c SHA-1: 3da9fffd5d88345d255fd0f973425f8d421b58a6 SHA-256: cd55c09e6f56d579f52fc0f448cba4e32ad434125172599cbcb14c94dcda65f8
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=bangla+quran+meaning+pdf, which is likely used to redirect the user to a malicious site. The document body text, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute 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/pify?keyword=bangla+quran+meaning+pdf
    • http://vusugivix.pleasantviewumc-abingdon.com/uploads/1/3/1/3/131383664/jovifugedabuvivada.pdf
    • http://files.livingwithachoice.com/uploads/1/3/1/3/131378990/5801802.pdf
    • http://files.moovartfrance.com/uploads/1/3/0/7/130775257/b149988e6b42.pdf
    • http://files.glamorgananimalclinic.com/uploads/1/3/1/4/131438216/2a13dabe.pdf
    • https://cdn.shopify.com/s/files/1/0439/0040/3880/files/28582194538.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/wufof.pdf
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/janitrol_furnace_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/9512/9254/files/lanafexokomi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4007/7981/files/76352379340.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/zizutuzulewepaniwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/vistaprint_business_cards.pdf
    • https://cdn.shopify.com/s/files/1/0428/8351/4527/files/39749237652.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/didul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/niborojinumaxo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/45624883395.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/4th_grade_staar_math_practice.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
stream_005_off0000823f.bin
cd6d79593b6ee8cfdf8dde3f5d1e75bc146b731f1d5279be635c0e3b360e7de8
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x823F 17448 bytes
font_00_sfnt_off00004e9d.bin
6d4f2c44c0ce84d72fe91a8f254c72865dc629ae56ad26d9b697c8e50519fb0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9D 5356 bytes
font_01_sfnt_off000060b6.bin
4d849b1afa01e5c863086d3954bdbf27c01a21372824d8f44b054bcb5bf0db05
pdf-font-stream PDF embedded font (sfnt) at offset 0x60B6 9760 bytes