Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9df297ce901dac…

MALICIOUS

PDF

45.5 KB Created: 2020-08-14 00:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be7289a7881e96f4aa4ac61a865d3379 SHA-1: 319da2fc1622c88a54db00ebfa0acbfe59a305d5 SHA-256: dd9df297ce901dacb23043ee783a256eadc6f527be95325e2c26d849a54391fa
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic firing for a redirector link pointing to 'ttraff.cc'. This URL is presented within the document body as a 'Digimon rearise digivolve guide', suggesting a lure to trick users into clicking the malicious link. The PDF also contains a large number of external links, many of which are benign, but the presence of the malicious redirector is the primary indicator of compromise.

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=digimon+rearise+digivolve+guide
    • http://files.thechurchofthesaviourdenvillenj.org/uploads/1/3/2/7/132712120/tekaz-zomovotiro.pdf
    • http://files.sa4christ.com/uploads/1/3/2/8/132814136/4ea5908f8613.pdf
    • http://files.alegraloewenstein.com/uploads/1/3/0/7/130775244/6692149.pdf
    • http://rotexe.maxgalli.net/uploads/1/3/1/0/131069934/807ed.pdf
    • http://files.omninsw.waggamatters.com/uploads/1/3/0/7/130775694/24d95297f.pdf
    • https://cdn.shopify.com/s/files/1/0448/8128/1191/files/hallelujah_piano_solo_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0440/0853/8262/files/64833969905.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/jekirorogelizoxapiwirofi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/trusting_god_day_by_day.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4241/files/ca_dmv_ambulance_driver_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/luvuzasuxevivudegisojero.pdf
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/667065386.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/blackjack_basic_strategy_table.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/23424309114.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/dagexinunowejobolewafav.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_off000073c1.bin
f8e0ea16cae2fd2cf12b003f9facce34794e2e3aa6aeb626fe5762199566e8a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 5204 bytes
font_01_sfnt_off0000855d.bin
1bf25bc19e858cff12ec81e8731f2e5a5306c971dcad407bc77ebcca404a62e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 10444 bytes

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