Malicious PDF — malware analysis report

Static analysis result for SHA-256 590b14f135472e57…

MALICIOUS

PDF

47.1 KB Created: 2020-08-07 06:58:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7135e36ff1257b7a689bb030b7853890 SHA-1: 2277567cee1a89893d10bea80a2e830b8b0d3371 SHA-256: 590b14f135472e575937ceaaa49725c159f35cde2eb995c512154d4722c2ae44
120 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 'ttraff.ru'. The document body also explicitly contains this URL, suggesting it's the primary lure. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with the highest-ranked being a Shopify URL. The file's purpose appears to be directing users to potentially malicious content through these links.

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/pify?keyword=ca+vishal+bhattad+books+pdf
    • http://files.naturesgrove.ca/uploads/1/3/0/7/130776726/a8d823abeb8ea7.pdf
    • http://files.ourplaceatscotch.com/uploads/1/3/2/6/132681460/zefulipiviwagivep.pdf
    • http://duxofu.farmingdalesummit.org/uploads/1/3/1/3/131381078/refezapudigarapun.pdf
    • http://files.mynextbike.com/uploads/1/3/1/0/131069915/pamijedado.pdf
    • http://files.ippconnect.com/uploads/1/3/1/0/131070845/2739000.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/genusovubede.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/34946311230.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/56708506958.pdf
    • https://cdn.shopify.com/s/files/1/0436/6021/4425/files/34112707443.pdf
    • https://cdn.shopify.com/s/files/1/0439/0138/6920/files/65800409409.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/81440530988.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/katagabejedubidosowawob.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/tax_treaty_indonesia_belanda.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/69322856924.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/pezedugalixezot.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004867.bin
4af723bcff4861aefbe61906a50357a864ba86bf8314f3b189bae0e81712b243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4867 4884 bytes
font_01_sfnt_off00005901.bin
1c0a3d157a4c8bcbd2522f5885c0c453a7c234c988c3df03592eb88732529152		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5901 3092 bytes
font_02_sfnt_off000065ab.bin
52461939661f0dc7015587cef00f4cd0d510a4608fb6e6fc6ef527ee8f223bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 10428 bytes
font_03_sfnt_off0000892a.bin
66ebc0a0ad91e65a10baeb16446991f67cccedd9ebfb903d71229f49e92537dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x892A 16756 bytes
font_04_sfnt_off0000a04b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA04B 4324 bytes

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