Malicious PDF — malware analysis report

Static analysis result for SHA-256 b680cb1a57683c68…

MALICIOUS

PDF

43.7 KB Created: 2020-08-19 10:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 603bad1f57ea7fe2dfd88609e8521920 SHA-1: ba8e8c6baf0897a193883e86761b7a6f9deda1ec SHA-256: b680cb1a57683c683d315099e48a6de1d2357048c2d6e32119b9bb9ceaf0d23d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'woolworths job application form'. The document also functions as a link farm, containing numerous external links, many of which point to Shopify-hosted PDFs. The primary malicious URL is https://ttraff.com/pify?keyword=woolworths+job+application+form+2018, which likely leads to further malicious content. The presence of multiple PDF links and a malicious redirector suggests a phishing or scam attempt.

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=woolworths+job+application+form+2018
    • http://files.scholarshipseason.com/uploads/1/3/1/4/131453464/sibubibulodeli-mevuwofifesar-taxezemo-jimulinam.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/zidunaxusujoneluzenolufo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0715/5110/files/17448951405.pdf
    • https://cdn.shopify.com/s/files/1/0437/5347/2151/files/chrome_store_para_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/botanadexovelaluvolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/kigisebusexitoraleduriw.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/68037856255.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/94609963548.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/mipilaxesonig.pdf
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/85440771616.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/15471177349.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_off00005d8c.bin
9caf004ad4e50bb6a0ad83f3cd140f605959cffcb11fde57ff80da41e8060f81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8C 5764 bytes
font_01_sfnt_off0000710c.bin
90d07172d0d913bd17460114e2882a559fcbcb558c8fc143cbfb8a47dba04797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 10240 bytes
font_02_sfnt_off000093d8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93D8 4324 bytes

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