Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef06c963643608cd…

MALICIOUS

PDF

53.1 KB Created: 2020-08-14 04:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2229bf2734dee7186d7455f413e7434 SHA-1: 005c47ad6fe6a48b6ae27bf60090a6e5defc2ced SHA-256: ef06c963643608cd3d465cec329090c626b1f557adc7e652cc338f9488401dea
128 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding a large number of URLs, many of which are hosted on benign-looking domains but likely serve to manipulate search engine results. One critical heuristic identified a direct link to a known malicious redirector. The document body itself is heavily obfuscated and appears to be generated content rather than user-readable text, further supporting the malicious intent of the embedded links.

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.ru/pify?keyword=d%2526+d+5e+character+sheet+editable+pdf
    • http://files.black-hawkcompanynjrotc.com/uploads/1/3/0/8/130813586/rusafuzeba_pulomebolomu_lakuneru.pdf
    • http://files.senekal.biz/uploads/1/3/1/6/131606128/vupanejobe-dirivu-tazutivifon-bazuwavonisid.pdf
    • http://zuvusake.fpyc04furysoccer.com/uploads/1/3/1/6/131637136/c0daf9ff2e29.pdf
    • http://dupuzit.lion-chemical-stores.co.uk/uploads/1/3/1/6/131606407/3358985.pdf
    • http://files.yogicozy.com/uploads/1/3/1/3/131383456/8e0b2cf2d9607c1.pdf
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/real_estate_broker_bill_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/14730414280.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/limp_bizkit_ready_to_go.pdf
    • https://cdn.shopify.com/s/files/1/0436/8115/3177/files/74890681962.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/4950509772.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/kittens_game_blueprint.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/lituran.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/pisomimimujasunemavejab.pdf
    • https://cdn.shopify.com/s/files/1/0431/3579/5354/files/23378106365.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/51563675842.pdf
    • https://cdn.shopify.com/s/files/1/0435/5201/4495/files/25360752150.pdf
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/no_man_s_sky_monolith_puzzles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/dizerunumifukiwaredur.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_off00006403.bin
22fea3dee9acfdbbec84324cbdbaa3e06a7d12f3ffb7104a9126c57195c41ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6403 6648 bytes
font_01_sfnt_off000074ae.bin
a720ab9a66a765f95553d1ae55d21565e8d34aee4216bb70d40849770a960c9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74AE 4156 bytes
font_02_sfnt_off000082da.bin
bd8e6638e8ed3a379578b763b1ff74c4c6afee28d622411c0b451533daa2b692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DA 16220 bytes
font_03_sfnt_off0000b220.bin
89e8aafbe8ee2c7f3266b17cd39cf05f10435523f88472c7e1a1d2e3feddee8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB220 16192 bytes

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