Malicious PDF — malware analysis report

Static analysis result for SHA-256 52eca565a97d3a94…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 08:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 882c0fa7bbb2ab3b6769aff6b913ccb4 SHA-1: bb80d4249b3368552ce1da1d2c4f12d8edb638d0 SHA-256: 52eca565a97d3a94b988bc1d53c76dba33e02cc23f1264d007e053df48f77fa7
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/wb?keyword=list%20of%20minerals%20in%20food%20and%20their%20uses%20pdf. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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.ru/wb?keyword=list%20of%20minerals%20in%20food%20and%20their%20uses%20pdf
    • http://files.anasofiarodrigues.com/uploads/1/3/1/4/131453252/dd8aeb8201e.pdf
    • http://files.gboromassage.com/uploads/1/3/1/4/131410370/3356015.pdf
    • http://files.acdavisbass.com/uploads/1/3/0/8/130874029/c68711e.pdf
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/suneladepipamevitidag.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/72542990261.pdf
    • https://cdn.shopify.com/s/files/1/0435/5463/5937/files/malovowiruxegufuziturev.pdf
    • https://cdn.shopify.com/s/files/1/0435/2956/8408/files/fufesopabotalo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/18042930441.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/22570888241.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/misadijadosebedukufemalul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/pastebin._com_raw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/71796053969.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/dutuvepojevumoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/fafofupewagovobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7271/files/66743497033.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
font_00_sfnt_off00006076.bin
e56c35da16b7d0969553e91c042120f87d98cb6065f01bde3e37ff362bc9eab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 5104 bytes
font_01_sfnt_off00007195.bin
221d3ad2d43f432d82d4e2766c64270b8ab27fd4b314f464924c1cb9c387ce95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7195 9504 bytes
font_02_sfnt_off00009207.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9207 4324 bytes

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