Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a49414bd0268cc…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 10:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b53c100cc52a787547b18b413bbc9cd SHA-1: 6b15750813f7133e65b041b3e82884b7d92b2d8c SHA-256: 82a49414bd0268cc88eb4804fc9d439d05d3071fef21fdf93c8a3c0ca5cd426c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a large number of embedded links, many hosted on Shopify, which is indicative of a link farm used to obscure the malicious destination. No scripts were extracted, but the presence of a malicious redirector URL is sufficient to classify this as a phishing attempt.

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=because+of+you+by2+song+free
    • http://rugemenig.arkansaspottery.com/uploads/1/3/2/3/132303382/78cb7ab6e7.pdf
    • http://gikux.soulsabai.com/uploads/1/3/2/6/132681579/japumelijiw.pdf
    • http://files.turtle-world.com/uploads/1/3/2/6/132695492/mijakaxibawe.pdf
    • https://cdn.shopify.com/s/files/1/0447/5496/0533/files/polawojixeginage.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/veritiloxoxafegojar.pdf
    • https://cdn.shopify.com/s/files/1/0447/4263/9765/files/carbanion_reactions.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/hand_sewing_leather_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/valores_normales_del_antigeno_prostatico_especifico.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/92302889043.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2540/files/xenekazeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tomazemajetel.pdf
    • https://cdn.shopify.com/s/files/1/0437/4557/5061/files/lm741_datasheet_fairchild.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/larezodaxadudad.pdf
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/xobav.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_off00004a58.bin
733041543fa9ab868bd2c1543bf8485f2d8104337df3cf8cf92bc24a8097255c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A58 3480 bytes
font_01_sfnt_off000056b7.bin
fbc2801f8c2450519f860dc889307cd26b01ff22c6d6e9b875e75a2db0ad5292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B7 5196 bytes
font_02_sfnt_off00006869.bin
fc274f71698c1c965d7f095aab6fde368e0f4c33fe27055a0f8775ae63efe1cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6869 12692 bytes
font_03_sfnt_off00008dec.bin
dabf0ccc451caf4864c9b22ca91318a92e8f625b469dd0561edf59b451c7a792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DEC 18776 bytes
font_04_sfnt_off0000ab53.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB53 4324 bytes

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