Malicious PDF — malware analysis report

Static analysis result for SHA-256 5253320b71d97fcf…

MALICIOUS

PDF

44.7 KB Created: 2020-08-21 21:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53535f514c710db7fb02a9fea3262e83 SHA-1: 872fd0b66919f8d3f7dd4c0bcfa8d55916b96c81 SHA-256: 5253320b71d97fcfb128640c8c694ce2857a5d6f1d26673768efea32289792fb
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.ru/pify?keyword=detective+conan+main+theme+piano+sheet+music', suggesting a lure to disguise malicious activity. The presence of a PDF link farm further indicates an attempt to distribute malicious content or engage in SEO poisoning.

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.ru/pify?keyword=detective+conan+main+theme+piano+sheet+music
    • http://files.kiwitriathlete.com/uploads/1/3/1/4/131453463/8414d174360ba.pdf
    • http://setuja.amfcontractinginc.com/uploads/1/3/2/7/132740720/52eab244.pdf
    • http://nirer.lisbonlighttours.com/uploads/1/3/1/3/131384635/c310071cbb8d37.pdf
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/sibezuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/2163/0631/files/pujevokoruvunexotovijaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/novevedipetetazetuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/zeraxavusawovixovu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4813/8912/files/33813267899.pdf
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/bogokepofemoti.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/suikoden_2_rom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/70107003519.pdf
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/7625654101.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/windows_10_battery_icon_greyed_out.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_off000050b1.bin
8714aecb8db323b8aba4edaf9cbfa7883f94ac970aabf3cacb7bdb93a871019b
pdf-font-stream PDF embedded font (sfnt) at offset 0x50B1 5184 bytes
font_01_sfnt_off000062de.bin
8e19ca1579d338281a1e3197a6ab72143e303417186ebe5f0b5da536160194ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DE 5104 bytes
font_02_sfnt_off0000741b.bin
51600352978d81dbbf0b62bf80c495e33e20b471cb1964c521ee0704031570e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x741B 15032 bytes