Malicious PDF — malware analysis report

Static analysis result for SHA-256 20be27398f2030c8…

MALICIOUS

PDF

40.5 KB Created: 2020-08-12 07:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e34ba5826c1badca6c382314d5b8f65 SHA-1: 4c90cc9e655d60044d4f72b0468ffe63850d3da9 SHA-256: 20be27398f2030c8db218b7aa52bc85a58e4787d53382bc17cbcf73d422d9d33
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is used to redirect users, likely to a phishing or malware distribution site.

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=autocad+mechanical+2020+3d+tutorial+pdf
    • http://files.jimsalvucci.com/uploads/1/3/1/6/131637226/vipabunilasa.pdf
    • http://napowun.davidcareyimages.com/uploads/1/3/1/1/131164312/kupuxukekaxu.pdf
    • http://files.natesessentialtraining.com/uploads/1/3/0/7/130739490/1861880.pdf
    • http://files.shiragirlschoir.org/uploads/1/3/2/6/132682048/zidol.pdf
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/vejil.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/nosafinug.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/que_es_arquitectura_de_software.pdf
    • https://cdn.shopify.com/s/files/1/0429/2008/3612/files/zesubidagunimuvemimuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/55758263010.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2191/files/kevewato.pdf
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/50787161906.pdf
    • https://cdn.shopify.com/s/files/1/0434/4892/6364/files/xbox_360_minecraft_mods.pdf
    • https://cdn.shopify.com/s/files/1/0437/8211/1381/files/srimad_bhagavatam_telugu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3670/2870/files/zelda_4441_discord.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/mepifepovokeruvaridesose.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_off00006068.bin
70deb8690f5c9e0652ff4d9b5b22a438dc5cbe3fff72add8ee3d68d588c0d9f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6068 5644 bytes
font_01_sfnt_off00007375.bin
01faf552c28a5254de0bdca18d14b21f076406c9cf0eb5caa64ef6d9a89d13b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7375 9796 bytes

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