Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e3865ffc7cd3c0…

MALICIOUS

PDF

43.8 KB Created: 2020-09-30 00:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d18fec7d3d4a938b195a108b356477e SHA-1: bcda8749cbbca75cedf774ff4635999cb7fcc6bf SHA-256: 57e3865ffc7cd3c069e00d2d02e0d9f8d7cf3ad00c11c396ae4acdaf53e1d054
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'beekeeping for beginners book pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. This suggests a phishing or scam attempt where the user is tricked into clicking a link that ultimately leads to a malicious site.

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://cctraff.ru/strik?keyword=beekeeping+for+beginners+book+pdf
    • http://files.rolyart.co.uk/uploads/1/3/1/0/131070351/gegojezejivinene.pdf
    • http://jarexu.ccpublicschoolsdance.com/uploads/1/3/0/8/130874540/fozumutomed_dukobopakiveli_zijibiz_debewid.pdf
    • http://pagazi.defiantcircusarts.com/uploads/1/3/0/8/130814030/3774775.pdf
    • http://gipibud.pa-di.dk/uploads/1/3/1/6/131636991/6355515.pdf
    • http://files.mesmanfarm.com/uploads/1/3/2/6/132682610/657784.pdf
    • http://files.lizziebee.org/uploads/1/3/0/8/130813967/6283095.pdf
    • http://files.drsusankentarce.com/uploads/1/3/1/3/131398497/rabeminad_bowitokotale.pdf
    • http://files.maoriworks.com/uploads/1/3/1/3/131397946/toraxakev.pdf
    • http://files.qiyi-wu.com/uploads/1/3/0/8/130813592/c0cbc6b.pdf
    • http://files.cscdlab.com/uploads/1/3/1/0/131069759/fe70ef0b6.pdf
    • https://uploads.strikinglycdn.com/files/ebe7dba4-6988-4591-96df-deb3077fe2ca/54136205886.pdf
    • https://uploads.strikinglycdn.com/files/291710be-34b6-4177-8ee5-1a24804b4987/xerisatevuwi.pdf
    • https://uploads.strikinglycdn.com/files/d73ae8e1-d7e2-432b-9d9e-c44d687e478f/87868009737.pdf
    • https://uploads.strikinglycdn.com/files/5bf90630-598a-434a-83e2-2185f7c1d829/30379665653.pdf
    • https://uploads.strikinglycdn.com/files/e4da62b7-3e7c-4a98-97e3-3d6561eafb9b/xaxaxizuzadosiwagokaseb.pdf
    • https://uploads.strikinglycdn.com/files/63cdf255-2f3e-433f-8461-3cd3173f6c09/duzetosemowimaxogib.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_off00006c7a.bin
60e3ad5ca9c6d7d704d4ce7323c66b71450646c1303bbe5535b0ad55b05b6e08
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 5220 bytes
font_01_sfnt_off00007e56.bin
cfa26cbde0479765961cec63e23f1441dc3b33338ce7a3ffc2b3b7abfa981554
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E56 10556 bytes