Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db56ce0b3e114f8…

MALICIOUS

PDF

88.3 KB Created: 2020-08-12 15:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cc68ce6df4631c80c89cb8748efae7b SHA-1: 0369ec6e9c91f4ea7f2aff68e706381b4358c16b SHA-256: 8db56ce0b3e114f85b14d061a5443c592c5d3e0b173fb0db345838502083aafc
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to deliver a second-stage payload. The document body, though heavily obfuscated, contains the same URL and text related to 'shrimad bhagwat katha gujarati pdf', suggesting a lure. The presence of a visual download button heuristic further supports the social engineering aspect of this attack.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=shrimad+bhagwat+katha+gujarati+pdf
    • http://subapul.k-scopesolutions.com/uploads/1/3/2/8/132814930/pexegu.pdf
    • http://files.studycaribbean.com/uploads/1/3/0/8/130874369/xabugerofiko_rupisugodap.pdf
    • http://wiwiwuwez.boardroomdevelopment.com/uploads/1/3/1/3/131378950/c3cec9f0334c6cc.pdf
    • http://files.socialinnovationfredericton.com/uploads/1/3/0/8/130813777/pimex.pdf
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/suwatukazomuke.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/breakthrough_plus_1_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5755/2277/files/88624900594.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/telecharger_carte_geographique_du_monde.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/87355578116.pdf
    • https://cdn.shopify.com/s/files/1/0437/2581/5959/files/degirepexenemoruleli.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/pukizesubatedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/zogudedow.pdf
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/basic_english_grammar_book_2_for_children.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/marker_assisted_backcrossing.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_off00010175.bin
aa8df25b761c02141a2ea8eb63428763777ff1405e9add0d266f4c19a2433849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10175 5720 bytes
font_01_sfnt_off000114de.bin
7934f43011f6fb03547448d4ed940a24009507f15131292a546c634800082e2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114DE 20828 bytes

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