Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3ee1bf845afde2…

MALICIOUS

PDF

50.2 KB Created: 2020-08-02 14:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93d16d734073e3d8dc547e5270c7076f SHA-1: c04658985a0766ca82b4141ae69241bddcf98979 SHA-256: fc3ee1bf845afde26769a929a4e075a8f7d052ed63a0a0cf35f64678da2e8812
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at 'ttraff.ru'. This redirector is designed to lure users with a 'Netflix my list' keyword, likely to a phishing or scam page. The document body, though heavily obfuscated, also contains the malicious URL, reinforcing the phishing attempt. No scripts were extracted, but the primary attack vector is the malicious link farm.

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.ru/pify?keyword=netflix+my+list
    • http://files.sallyrothchildceramics.com/uploads/1/3/1/4/131409037/3439854.pdf
    • http://files.robinstravelblog.com/uploads/1/3/1/4/131454238/4562773.pdf
    • http://files.lukescholtes.net/uploads/1/3/1/4/131406826/efee85cc6.pdf
    • http://files.facademarketing.com/uploads/1/3/1/4/131438274/8506957.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/wavevujegi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/23354097973.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/98913928071.pdf
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/46028151319.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/42524412063.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6117/files/guzuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/kasigasanokorodivezoduvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/74413956313.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/mipogodifolagenip.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/50075186148.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/sadib.pdf
    • https://cdn.shopify.com/s/files/1/0431/7767/2868/files/93882668010.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/kapoped.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_off00006661.bin
78e50999453d4833de39b8e33a6c3574a4d28f6d277ee75f65ebcc1b0506d265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6661 4320 bytes
font_01_sfnt_off00007520.bin
b7ad787faa2f6319b4232633e06c7231788159b88d51380772403c6f9941e1a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 10232 bytes
font_02_sfnt_off0000984a.bin
4fe41912af3a87e628e8ae4b972d28b32b77f8f7e20d822c43ca5b03a4a22231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984A 16184 bytes
font_03_sfnt_off0000ad88.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD88 4324 bytes

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