Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0b1fc3357c047b…

MALICIOUS

PDF

35.6 KB Created: 2020-08-17 07:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d2ce72e764dec03b11f6b47bcd950c SHA-1: 8da94e0b1762c94b5307a876ac7cc5febe08f96d SHA-256: cc0b1fc3357c047b8758fd98a0bd1d42bb6736cd72e576aba9bde0894befde1f
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=ukulele+fingerpicking+tabs+pdf, which is flagged as a malicious redirector. This suggests the document is designed to trick users into clicking malicious links, likely leading to further malware downloads or phishing pages.

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=ukulele+fingerpicking+tabs+pdf
    • http://lomuvug.itmonline-updates.org/uploads/1/3/2/7/132740449/najuga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6976/6808/files/lolebemopegijixedaben.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/functions_of_bombay_stock_exchange.pdf
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/lofudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/rubovidararelonabijuwuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/lalojudepatiwudusoguneju.pdf
    • https://cdn.shopify.com/s/files/1/0437/7149/4554/files/mysql_workbench.pdf
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/puzusanezixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/mercruiser_3._0_service_manual_free.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_off000050d7.bin
49ebbce68182deb2bef1253725f1910dfba00164d4005423fffd8eefd8be1a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D7 5516 bytes
font_01_sfnt_off0000639d.bin
8790c5c67e8aff701b7f07d6b57752dd421cc332cb7b70ce94cc638bb6d206d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639D 8916 bytes

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