Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4c8000d23b9e1b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-12 09:20:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599d48417d1d3b0b61b7c45313ead1ec SHA-1: a69ada1d6819dcf2472f2e564ccdb0f7a9913e26 SHA-256: 3e4c8000d23b9e1ba4a6e0ebbca3b73255a715b6f4ee3011d5bbee43c86a8875
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to a game guide and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent.

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.cc/pify?keyword=achtung+cthulhu+investigator+s+guide+pdf
    • http://files.realmediavalue.com/uploads/1/3/1/6/131607810/jaxin_bigimofoxe_nularuz.pdf
    • http://xelusavim.christabolain.com/uploads/1/3/1/4/131483068/rotabusezo_muzorebasoxa_rezawavikukebi.pdf
    • http://sorekug.gulfcoastnstra.org/uploads/1/3/1/4/131453133/e17251244be5e.pdf
    • http://files.ruckercwc.com/uploads/1/3/0/7/130738915/9598347.pdf
    • http://files.autotechccc.com/uploads/1/3/0/7/130739919/33538.pdf
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/32610237879.pdf
    • https://cdn.shopify.com/s/files/1/0446/1314/0643/files/a_level_psychology_textbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/19983200505.pdf
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/35341056865.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/43179157028.pdf
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/nuxabakupirebotapadakizi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/78058985220.pdf
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/filogegopabefirelulis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/21475724606.pdf
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/6099975492.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/bujetafagodekuguwopi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/miluz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/70179172381.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_off00006f11.bin
fde320e513944ff89f28b373b6bb5bbec1cad27e923fd3da6de04be11357ea84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F11 5464 bytes
font_01_sfnt_off000081ac.bin
1b9556cf6925a2e9782cf95189486adae61981ea9f5332ed296eea10d0a8fe04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AC 15348 bytes

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