Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0b4ab63dd93eb3…

MALICIOUS

PDF

51.5 KB Created: 2020-08-20 04:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 069b8d0f046bdeea180d8d0eb985e072 SHA-1: 1371b42c4513fbc9bc15ed7311f970ca65511bec SHA-256: fb0b4ab63dd93eb3724e486d19c6bd80ed52c6ca8411122ff507ba1f3f087d36
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=pokemon+y+3ds+rom+citra+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly supports the malicious verdict. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site disguised among seemingly legitimate content.

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.com/pify?keyword=pokemon+y+3ds+rom+citra+android
    • http://files.wildandfreewellness.org/uploads/1/3/0/8/130815140/zogowonikubazono.pdf
    • http://files.cikopano.net/uploads/1/3/0/7/130776498/lilinivovufotokenej.pdf
    • http://vutedo.belleaurum.com/uploads/1/3/2/8/132814930/sawosimafafo.pdf
    • http://files.satokatzbengals.com/uploads/1/3/0/8/130815095/tejurunolum_fofazuwelap_zonitumosa_xojabeba.pdf
    • https://cdn.shopify.com/s/files/1/0435/1256/1819/files/34715580569.pdf
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/jusezowozefafidi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52665001447.pdf
    • https://cdn.shopify.com/s/files/1/0435/9648/0671/files/calculus_bc_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5491/files/47029126304.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/60088697940.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1109/files/hand_and_finch_analytical_mechanics_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/27944607317.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/89559522988.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_off00008b7c.bin
6c5bd6d2c9552075ee0da1fa84190ac8bf526cf5500a93562f098cf787cfb820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7C 5384 bytes
font_01_sfnt_off00009db7.bin
0b90aa60881857d9d070871ed3c6b47a96e91192c549919d8df4b5a261c41d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB7 10800 bytes

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