Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cfac1aa80b2fbc…

MALICIOUS

PDF

56.1 KB Created: 2020-04-12 13:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7e06e705b6ffa69c679829db0e493df1 SHA-1: 7215d14dad58318c08b244b5d5564138887dfe28 SHA-256: a9cfac1aa80b2fbc32665723ecfd8b1b97d2f84eac8d113b347725f74b49da79
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of external links, identified as a PDF link farm. The primary heuristic indicates a focus on external URI redirection. While no scripts were extracted, the structure suggests the document is designed to lure users to click on these links, potentially leading to malicious websites or further compromise. The document body contains garbled text and metadata, indicating it is not intended for direct user consumption but rather as a vehicle for the link farm.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://distancelearningtoday.net/uploads/1/3/1/6/131606597/131606597.html#transformacion+bacteriana+aplicaciones
    • http://theentrepreneuracademy.co/uploads/1/3/0/6/130604788/5741856.pdf
    • http://272097760920155322.com/uploads/1/3/0/5/130540583/putebejax-pebunu.pdf
    • http://ludvigbua.net/uploads/1/3/0/2/130288854/japipakowel.pdf
    • http://cjsalestraining.com/uploads/1/3/0/6/130605279/wukofan.pdf
    • http://chrisfurin.com/uploads/1/3/1/4/131409274/fafodirorifi.pdf
    • http://emeliejanssonfoto.com/uploads/1/3/1/3/131382217/41942e80.pdf
    • http://mixonanita.com/uploads/1/3/0/5/130588839/mepitaxi-xunupepezejedo.pdf
    • http://southernsanctuaryllc.com/uploads/1/3/0/5/130545627/jimupogeviw_timoxumev.pdf
    • http://dragonmountain.net/uploads/1/3/0/2/130291365/kepaworolir.pdf
    • http://kamoniconsult.com/uploads/1/3/0/6/130639085/5ce169dc0.pdf
    • http://wchollywood.org/uploads/1/3/1/3/131384636/vewijogixelosebun.pdf
    • http://gainteriorismo.com/uploads/1/3/0/8/130874467/c4bfd3370f3d7.pdf
    • http://thirdstate.org/uploads/1/3/0/4/130435786/2585546.pdf
    • http://hotel-edelweiss-sur.com/uploads/1/3/1/0/131070336/4483827.pdf
    • http://desertpoppynaturals.net/uploads/1/3/1/4/131407406/novalemofilazijir.pdf
    • http://cjsalestraining.com/uploads/1/3/0/6/130605279/wukofan.p
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008fca.bin
bf617f9ff68eaeaa0b125206c9f8880b1f69de619e975d6a995547bb81c8b384		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCA 10076 bytes
font_01_sfnt_off0000b349.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB349 2652 bytes
font_02_sfnt_off0000bcaf.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCAF 16036 bytes

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