Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aaf51ae718ec80c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-10 17:30:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59bbae9120e434caefc51352c4b0a285 SHA-1: f8172fc82f5f2ba11f9a77aa9974c8d337558458 SHA-256: 2aaf51ae718ec80ccf8e13b322e5f9fd8f8ee3d8ad5864929e3dc9e8fc26f209
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link, 'https://ttraff.cc/pify?keyword=bodybuilding+tips+bangla+pdf', is designed to redirect the user to potentially harmful content. The document body itself appears to be obfuscated or corrupted, but the presence of the redirector link and the link farm strongly indicate a malicious intent to lure users to malicious sites.

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.cc/pify?keyword=bodybuilding+tips+bangla+pdf
    • http://files.henrydai.net/uploads/1/3/1/3/131383934/jepupi.pdf
    • http://files.achievecharter.org/uploads/1/3/1/0/131071256/9264552.pdf
    • http://files.dancelikeacupcake.com/uploads/1/3/1/6/131606118/mapikelibezamuk.pdf
    • http://bibarer.yourorganizedsolutions.com/uploads/1/3/1/4/131483281/mobafimid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/jopepebumizowoloje.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/zirakuzad.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/22060875779.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3744/files/how_to_see_chunks_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/51271253725.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4711/files/gulamufukuxulepejador.pdf
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/history_books_download_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0376/files/72337802129.pdf
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/84026995695.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_off00005687.bin
1767659e473a2872c694da987ad016c67110f39e9455831db86070bb1d54a953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5687 5168 bytes
font_01_sfnt_off0000682c.bin
812bcc7da51c6abc9cf6bb6e2a35f933b9642112136763fcd0e37193c32661fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682C 10084 bytes
font_02_sfnt_off00008a8b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8B 4324 bytes

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