Malicious PDF — malware analysis report

Static analysis result for SHA-256 446776d6964be181…

MALICIOUS

PDF

50.7 KB Created: 2020-08-05 12:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbc07995b90cb07f11b2d5fa5466fc43 SHA-1: a9f304118542937ec1c4ea2e50b8ff32e8ed90dc SHA-256: 446776d6964be1816377eb60c8d3a291b3d3edf35a68388227922b23eba9f386
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files. The primary link redirects to a known malicious redirector, 'ttraff.cc', which is likely used to funnel users to further malicious content. The document body, though heavily obfuscated, contains the text 'Normas de dibujo arquitectonico pdf', suggesting a lure to trick users into clicking the links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=normas+de+dibujo+arquitectonico+pdf
    • http://files.albertadirtriders.com/uploads/1/3/2/7/132712530/7a1a2.pdf
    • http://files.livelovelaughwithcarol.com/uploads/1/3/2/6/132681295/pizixekojufidus.pdf
    • http://files.eabundyauthor.com/uploads/1/3/1/6/131606206/gavafilesoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/lopunapulodagolabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/mofitegoto.pdf
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/majib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6207/files/92448396144.pdf
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/23067277590.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/marriage_in_pre_islamic_arabia.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/donuminunezazasugesugar.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/sisijumuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/toxuwuguleditadu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/6279101639.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/roroxofurakomuwixadida.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/7216330327.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_off00008585.bin
664fdcba18982278c27c75922d933d6944b462604b7285d4c691922188e96bf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8585 5580 bytes
font_01_sfnt_off00009863.bin
3a62cdbd1ad24b0fc8a963518398fda782d75ffabd249164aa9eb5b708693a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9863 10828 bytes

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