Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34605e9345813f3…

MALICIOUS

PDF

56.7 KB Created: 2020-08-16 01:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c57ece7489b40ae5d0d4f69896bfca7 SHA-1: c193ca16f19e2749e7dc596794e1c80592ddec4f SHA-256: b34605e9345813f37d5f836266179b0d61cfd4ba7ce9c45cd66ee286fb74a6ef
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'thinking in java book pdf free' and the malicious URL, suggesting a lure for users seeking free book downloads. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure.

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=thinking+in+java+book+pdf+free
    • http://files.jessiehodges.com/uploads/1/3/0/7/130775983/febaw.pdf
    • http://files.comfortrvmattresses.com/uploads/1/3/1/0/131070561/jolurasinajopu-sozuzur-zemiwosew.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/diferencia_entre_temperamento_y_caracter.pdf
    • https://cdn.shopify.com/s/files/1/0432/7312/6052/files/60346623221.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0605/files/51781577890.pdf
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/79172112990.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/9553899261.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/1212549670.pdf
    • https://cdn.shopify.com/s/files/1/0429/3866/3079/files/weniwisewuja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/35973469364.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/25863862816.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/zubakogafuvelebifexazaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/7936/8858/files/zinuvurivowor.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/7777871561.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/xagutapagarexafubuvoweti.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_off00009f3f.bin
7081810817c8b8042f9f91a27d0fabbfd946242e9ab3e733c86a7bbc6961957c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3F 5380 bytes
font_01_sfnt_off0000b186.bin
eb86d2552caebf24761329b01ac8cb32cdc068e13e2832ac127673ce3e86bf0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB186 10596 bytes

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