Malicious PDF — malware analysis report

Static analysis result for SHA-256 e65e8c77c68d6bc1…

MALICIOUS

PDF

45.9 KB Created: 2020-08-19 04:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c66f88de70f8eb2231c5e93f47896c2 SHA-1: 5cb80700ed2aba50332c2fc59a21a08c52d81aa2 SHA-256: e65e8c77c68d6bc1dcd8cc2698b6612cebf005b73450e5705d7148fe0d472858
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users into clicking. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated' or 'action required within 24 hours'. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=free+full+page+ad+template
    • http://files.ewireasonsounds.com/uploads/1/3/2/7/132740978/ribovijilibo-janare.pdf
    • http://xibemu.biglevel.net/uploads/1/3/1/4/131408024/1982604.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/29972647811.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/gipixe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3284/5207/files/fukafufadawosofamaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/braveran_ulotka.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/25511893662.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2166/files/strona_bierna_angielski_wiczenia_wszystkie_czasy.pdf
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/turnover_tax_in_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/3643765158.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4491/files/55282567463.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/14318879045.pdf
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/dnd_5e_player_s_handbook_color.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_off000076c2.bin
92549b92ac06d37873781db0ea771a5c7bec7cb56e4dc59ab2a164b482d18e22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C2 5140 bytes
font_01_sfnt_off0000882b.bin
153cdab6568f1a5aed258ef6e517c53fcb4f61f21ed44e50124adb9645331fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882B 10448 bytes

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