Malicious PDF — malware analysis report

Static analysis result for SHA-256 5602c52914722c2f…

MALICIOUS

PDF

53.5 KB Created: 2020-08-20 09:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5846dfe09ea46e0fc43164070916a74c SHA-1: e23b1f505f94f8391be95d57d5e0ab107d7e49c4 SHA-256: 5602c52914722c2f81eb03c96053b14127a22f037604a970cf0dc8291012c8fa
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL 'https://ttraff.cc/pify?keyword=cms+guidelines+for+hepatitis+a+vaccine'. This suggests the document is designed to lure users into clicking malicious links, likely leading to further compromise.

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/pify?keyword=cms+guidelines+for+hepatitis+a+vaccine
    • http://sufan.carolwooten.com/uploads/1/3/1/3/131381369/3974504.pdf
    • http://jobos.olivetreedoc.com/uploads/1/3/0/7/130740257/7787711.pdf
    • http://kajetun.hammanrealestate.net/uploads/1/3/0/8/130814328/ligizifobez-tefosu-piselezosavosu.pdf
    • http://files.stemsuccesseducators.com/uploads/1/3/2/7/132710753/gonomikaka-jugorumukarun-buwosoju.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/43415651044.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/55969044713.pdf
    • https://cdn.shopify.com/s/files/1/0433/0553/3598/files/lixefatitunamolasidates.pdf
    • https://cdn.shopify.com/s/files/1/0450/2683/6630/files/29490491553.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/rofirolefefunezi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/basics_of_english_communication.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/gomemigebeberurajovulom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/12521614362.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/95452998652.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/owasp_sql_injection_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/koxobur.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000936e.bin
89acc331d5ccad76be99b2541a8c47c1408c8a80cab7a6c45f3ed666f7ca3027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x936E 5532 bytes
font_01_sfnt_off0000a613.bin
c2024f501dbf56d091bc91649cbc7a5840f98a9cc9df24b895bdc086cbc61e4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA613 10304 bytes

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