Malicious PDF — malware analysis report

Static analysis result for SHA-256 a675314196056092…

MALICIOUS

PDF

56.0 KB Created: 2020-08-13 18:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5feef242094e59c1adb04d2c7dc185d5 SHA-1: 485d79166db07f2eb570b734d436e98cc75d1ef3 SHA-256: a6753141960560927513f5cf9ec20b786b11af5c076804e481c6f266e20f0392
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 resources. One critical heuristic firing indicates a link to a known malicious redirector at 'https://ttraff.com/wb?keyword=ejercicios%20conversion%20de%20unidades%20de%20volumen%20pdf'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=ejercicios%20conversion%20de%20unidades%20de%20volumen%20pdf
    • http://files.arkansasdreams.com/uploads/1/3/0/9/130969545/nijomoxizopof.pdf
    • http://files.theluxeinventory.com/uploads/1/3/1/6/131606069/52185.pdf
    • http://files.melrockworld.com/uploads/1/3/0/9/130969474/4697716.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/49286783403.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/91908371496.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/dobaguboru.pdf
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/lulotu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/arm_workout_at_home.pdf
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/retokugefodolug.pdf
    • https://cdn.shopify.com/s/files/1/0439/5902/5822/files/80429587283.pdf
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/tibelewoxidapige.pdf
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/38686633868.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/33315883132.pdf
    • https://cdn.shopify.com/s/files/1/0439/2806/0059/files/escape_from_monkey_island_walkthrough.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_off00009747.bin
814dd6dfdc315f0ad6aad9221ce33d764e8f3071c32715ef738c2d61ccf06aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9747 5392 bytes
font_01_sfnt_off0000a994.bin
e4a9c984a192cadd7c60b816374f8289a9bda41435aa97b6a0a016a42b1928d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA994 12136 bytes

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