Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd40d4a304d6383…

MALICIOUS

PDF

38.9 KB Created: 2020-05-13 20:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 0303bac7f34eeb299808cb101e986bc5 SHA-1: 5d1f7f9a6f65992fe46dbae2068b668fe713327f SHA-256: 1bd40d4a304d638398ceadaee38d5dbfb3edd20685e8e7b39637f49dd33ff15e
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with the heuristic 'PDF_SEO_LINK_FARM' indicating a mass link farm. The document body, though heavily obfuscated, contains text related to sheet music, suggesting a lure. The embedded URLs point to various domains, likely serving as part of a phishing or malware distribution scheme. No scripts were extracted, limiting the analysis of direct malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://colorado-es.com/uploads/1/3/1/0/131070712/131070712.html#fables+of+faubus+alto+sax+sheet+music
    • http://inmatecharity.com/uploads/1/3/1/6/131636737/8654588.pdf
    • http://bdobrikov.com/uploads/1/3/1/4/131454420/favom.pdf
    • http://afmsptsa.com/uploads/1/3/1/4/131438461/tidufisoxof.pdf
    • http://moniqueaguilar.com/uploads/1/3/1/3/131383802/saxediximamex-mexawo-pumavorufux.pdf
    • http://myfloresflowers.com/uploads/1/3/0/7/130740242/1f2ae7e4c014acb.pdf
    • http://charleshuette.com/uploads/1/3/0/3/130323527/7766371.pdf
    • http://coverallinteriors.com/uploads/1/3/0/5/130540219/numinenovot_vuriduboxuduv_xadud_dukizenugilo.pdf
    • http://strategictitan.com/uploads/1/3/1/6/131606330/81dfbeffab584c.pdf
    • http://eczemapp.org/uploads/1/3/0/7/130776567/kakakexasuvuvineri.pdf
    • http://remedyskitchen.com/uploads/1/3/0/6/130603731/1721566.pdf
    • http://kyonlife.com/uploads/1/3/1/6/131636914/6086190.pdf
    • http://cirrusmachine.com/uploads/1/3/0/4/130489572/89d36c712.pdf
    • http://weathereric.com/uploads/1/3/0/6/130604750/jejam.pdf
    • http://jvpartners.net/uploads/1/3/1/4/131409597/40122bd.pdf
    • http://blingafied.com/uploads/1/3/1/4/131453847/guxakajakude.pdf
    • http://techcoa.ch/uploads/1/3/0/6/130620685/63d46556.pdf
    • http://grayberts.com/uploads/1/3/0/8/130814921/bevujamaxifejodegeg.pdf
    • http://aesystems.org/uploads/1/3/0/9/130968962/suruza.pdf
    • http://coverallinteriors.com/up
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a24.bin
78d2cc8650c63e2a94a25fe0e831bf95ced6a97e28fad5781626dea30300a011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A24 11440 bytes

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