Malicious PDF — malware analysis report

Static analysis result for SHA-256 5745fe68b47c3495…

MALICIOUS

PDF

69.1 KB Created: 2020-08-06 02:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 658bb641259e2292b7f8b10340660f08 SHA-1: 2c7e62b7e7af4d90f29b060b0cc74e330763fcdb SHA-256: 5745fe68b47c3495062f8b23be5dfe7730204f660929568dd8b65e24d9c79623
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to `https://ttraff.ru/pify?keyword=cambridge+dictionary+pdf+free+download`. This URL is part of a link farm designed to manipulate search engine results and likely leads to a malicious payload. The document body also contains a call-to-action phrase, reinforcing the lure.

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.ru/pify?keyword=cambridge+dictionary+pdf+free+download
    • http://files.aaadentalbahamas.com/uploads/1/3/1/3/131384340/b484aac553bf5.pdf
    • http://gomoka.smallenginerepairgalvestoncounty-santafe.com/uploads/1/3/1/3/131379833/kavefika_pobepatix_kisur.pdf
    • http://votezu.kenaigold.com/uploads/1/3/1/0/131071243/6b48905fce.pdf
    • http://files.electricslidinggates.co.uk/uploads/1/3/2/6/132682282/2558304.pdf
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/46637404781.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/network_topology_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/46775200276.pdf
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/klr650_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6292/7263/files/20943538787.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/twisted_brush_open_studio.pdf
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/operational_organic_chemistry_lehman.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/pageluloreka.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/83413053173.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/dokekunasife.pdf
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/41901987332.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/geck_fallout_new_vegas.pdf
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/mabater.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/chuck_mangione_feels_so_good.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/vozofavujukewitu.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006222.bin
8d45aaff38f04f82c2c6b02adbd2a07bee3edb0c610835822644d70e7ab802e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6222 15536 bytes
font_01_sfnt_off000094c0.bin
b4025e1c11545533daa9638cf79d5ad3cf1c76d565f924429a6360ac50ca744d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C0 5536 bytes
font_02_sfnt_off0000a784.bin
fbf7c768830fa4b35a845b759759da5b9d952bcefd8cd8bf3beb4d23034c7574		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA784 9080 bytes
font_03_sfnt_off0000c123.bin
fa37327c01189713d38fb8a39cc68b0111d6f3e220fe9496c584f0908844bc6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC123 11100 bytes
font_04_sfnt_off0000e680.bin
1056ef4fff9ce1725c56bcf8466cf92e3b959fd2af8b8a37868b13bf287c59f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE680 19264 bytes

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