Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d3347e86828e4d…

MALICIOUS

PDF

37.9 KB Created: 2020-08-21 07:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 721aad79b5af37a8360e5ba0343dba6f SHA-1: 1b39c02d52b6fa9816cc90ebe44ee8f902120f38 SHA-256: 80d3347e86828e4d20315382dcb4979446dc600417a6228a4cb86c30dc00735f
128 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'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'cdn.shopify.com'. The presence of a 'download button' lure further supports the malicious intent. The document body, though heavily obfuscated, contains the redirector URL, indicating a social engineering attempt to lead the user to malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+bracket+generator+pdf
    • http://nonamarif.alyssagrossman.com/uploads/1/3/1/4/131482803/bikevitoberuro.pdf
    • http://rimedi.aprilsurgent.com/uploads/1/3/1/3/131381376/jaguritoveberurolu.pdf
    • http://kunudub.vintageaffiliated.com/uploads/1/3/2/3/132303382/xavulatiwasoz-topobigido-xarexuk-sufuxoxe.pdf
    • http://gamowi.laffpathways.com/uploads/1/3/1/4/131406717/6394135.pdf
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/88772712335.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/mugaditifavolixi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/blank_july_2019_calendar_printable.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/91269050110.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/76608429623.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/gilagobuzidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8461/1737/files/95466760146.pdf
    • https://cdn.shopify.com/s/files/1/0434/0701/6103/files/kidejazusifebesurip.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_off00005670.bin
6b957e8fc632241c637f237e8427ef193bd2927ae57205786dacca507b44ab5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5670 5272 bytes
font_01_sfnt_off0000686b.bin
f3097fcd91a0a67d5bcc86bbbf98ce64ce72ef1d6edfe2156607839aef8773d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 10184 bytes

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