Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbbfe31a719aac5b…

MALICIOUS

PDF

59.0 KB Created: 2020-08-10 06:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab100eb8ce519e4b3c12afe053fe5288 SHA-1: dc17e37a2fcb95bb5370f647eb7baa1e33c3da85 SHA-256: fbbfe31a719aac5b0b39655cc574c15a5663fc41dddeb326ac028954b6b22538
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com', likely to improve search engine ranking and distribute malicious content.

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.com/pify?keyword=employment+news+23+feb+to+1+march+2020+pdf
    • http://files.jackbeantea.com/uploads/1/3/1/6/131636834/ramugojaxulikutemub.pdf
    • http://files.camuzphoto.com/uploads/1/3/1/0/131070407/rumopuwukemune.pdf
    • http://files.gdnatoronto.org/uploads/1/3/1/6/131637308/fosawowude-tipifuziparuwe.pdf
    • http://files.handpressoth.com/uploads/1/3/1/1/131164250/083369c3a.pdf
    • http://rikodebes.adventurouspursuit.com/uploads/1/3/0/7/130775506/9051451.pdf
    • https://cdn.shopify.com/s/files/1/0440/1129/0782/files/bilovetad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/38945858174.pdf
    • https://cdn.shopify.com/s/files/1/0429/0258/5500/files/rizivajabefevekosaxijolu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6050/files/gibadawazudubofikawukono.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/wing_chun_training_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/plus_nut_tool.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/94828896367.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/87831778448.pdf
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/xitafetikodurazutoburuva.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/bacterial_classification.pdf
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/21990108332.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000751c.bin
4a64065eae819ff92b90c8bd7b9ca5269aa6e26f593d1990d23b75b762bd630c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751C 6176 bytes
font_01_sfnt_off00008a0c.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0C 3720 bytes
font_02_sfnt_off0000956f.bin
2fbf2a7e183735a292f82aad16b0c5d0f52ab55280663b132d22b581cc80b65a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956F 14720 bytes
font_03_sfnt_off0000c335.bin
557246b8b94789ccafb8ec865a0a28ce5837f15d48dbfed54fd1364986103032		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC335 8160 bytes

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