Malicious PDF — malware analysis report

Static analysis result for SHA-256 d456450f3a2a4ee9…

MALICIOUS

PDF

39.7 KB Created: 2020-04-02 03:11:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 402fae0d94a8ca2e3f4951bbd96b837c SHA-1: 452226785df3b3003907d228860f0da8ae65ce75 SHA-256: d456450f3a2a4ee9252d4e59230db0189af3665d77f77bed3206d039b811c812
70 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are numerically or generically named PDF files hosted on various domains. The document body text explicitly mentions 'free download microsoft office word 2010', indicating a lure to trick users into downloading potentially malicious software. The heuristic PDF_SEO_LINK_FARM firing suggests a large number of these links are generated for SEO purposes, likely to increase visibility for malicious downloads.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jacobrosenfeld.me/uploads/1/3/0/3/130313436/130313436.html#free+download+microsoft+office+word+2010+for+windows+7+32+bit
    • http://endgunx100.com/uploads/1/3/1/3/131379518/3dcb3ef73849b5.pdf
    • http://yelmyogacenter.com/uploads/1/3/1/4/131453226/9e4bd62d627a6a4.pdf
    • http://jolantapilinkaite.com/uploads/1/3/0/2/130287472/a25b4d.pdf
    • http://cenadeblancomty.com/uploads/1/3/1/3/131379047/9695556.pdf
    • http://thewrappinghouse.com/uploads/1/3/0/6/130605019/5d461dcc9e91b.pdf
    • http://cwb4nepal.com/uploads/1/3/0/7/130740232/a065f146.pdf
    • http://chargecarehealth.com/uploads/1/3/1/3/131381411/razago-vatufibuwado-gemobewavawiva.pdf
    • http://hectorgasconconsulting.com/uploads/1/3/1/4/131409508/xewur.pdf
    • http://knbranchfl.com/uploads/1/3/1/0/131070520/munajoxefazuxureki.pdf
    • http://cupcakesandaliens.com/uploads/1/3/0/5/130551694/c930af2d.pdf
    • http://mail.musicmansion.org/uploads/1/3/0/4/130489080/3790090.pdf
    • http://caitlinholley.com/uploads/1/3/0/6/130639452/9455326.pdf
    • http://niveditainstitutions.com/uploads/1/3/0/7/130738751/xofagigez.pdf
    • http://cesarxavi01.com/uploads/1/3/0/5/130589160/roxefe.pdf
    • http://mm-marketing.org/uploads/1/3/0/2/130289185/aefd390b5db.pdf
    • http://tune1.net/uploads/1/3/0/6/130604263/kejujidewutovemupizu.pdf
    • http://bcrhc.ca/uploads/1/3/0/6/130620492/9896477.pdf
    • http://themollyllama.com/uploads/1/3/0/7/130738814/44925.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073de.bin
16acb4e3711ea476f2029573137e96aa3ffc7406c255b625c74fb8228ffd44e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DE 7404 bytes

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