Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7cc19b75f479e89…

MALICIOUS

PDF

46.2 KB Created: 2020-03-16 08:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aad150a2bfcf2e2a0d640dd93029f1c8 SHA-1: 764f2bcb76f611f5f6990f772c5e1f7bb530e90a SHA-256: d7cc19b75f479e89a2f00f83470a0e1856968de0a2e985389397036ab06163e5
70 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified as a PDF link farm. This technique is often used to manipulate search engine results or to host malicious content. The presence of a visual download button further suggests a lure to trick users into clicking these links. No scripts were extracted, and the document body is heavily obfuscated, but the link farm heuristic strongly indicates a malicious intent to redirect users to potentially harmful sites.

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://xinpujingyulechengruhecunkuan.br3h.com/uploads/1/3/0/4/130476581/130476581.html#marketing+calendar+excel+template+2019
    • http://packer-products.com/uploads/1/3/0/3/130379474/1011659.pdf
    • http://missgclass.com/uploads/1/3/0/6/130620601/4992bc4f27ac.pdf
    • http://bewateryogaandcoaching.com/uploads/1/3/0/4/130476427/lesatubapifofol.pdf
    • http://lostjedis.net/uploads/1/3/0/6/130621947/rikud.pdf
    • http://www.plattevalleychildrensacademy.com/uploads/1/3/0/5/130550857/xojimalinewe.pdf
    • http://stapledonenterprises.com/uploads/1/3/0/8/130874523/visenebuvaneji_luperixatedob_sukuzumukemo.pdf
    • http://jiuzhouyulechengnet.br3h.com/uploads/1/3/0/2/130270982/fugemogoxibul.pdf
    • http://go2hour.com/uploads/1/3/0/4/130478520/fadabuxasukolipu.pdf
    • http://jfjaney.biz/uploads/1/3/0/8/130813497/vasixejuxe.pdf
    • http://mta-sts.mx.braverymassage.com/uploads/1/3/0/3/130313572/pelexaruferixi-dipadorotibo-lovewek-xubot.pdf
    • http://momtility.com/uploads/1/3/0/4/130488885/7c41d40550bd543.pdf
    • http://angryselfloathingbabies.net/uploads/1/3/0/6/130604180/valivojilugibel-tujaze-xudepikamo.pdf
    • http://shanghaiveggies.com/uploads/1/3/0/2/130272582/xapira_leliva_goxokarakipij_zedoker.pdf
    • http://falconinvestigates.com/uploads/1/3/0/7/130776809/6100477.pdf
    • http://choreographerconsulting.com/uploads/1/3/0/2/130289220/nimigojef.pdf
    • http://mta-sts.krassenkaragiozov.com/uploads/1/3/0/7/130738874/5946408.pdf
    • http://covenant.city/uploads/1/3/0/7/130775145/rosiwedisirepiri.pdf
    • http://dns.thestarbus.com/uploads/1/3/0/8/130814195/74bee8.pdf
    • http://www.saharaturfequipment.com/uploads/1/3/0/6/130621552/2366796.pdf
    • http://www.theatreteenreviews.co.uk/uploads/1/3/0/4/130477074/26af61f39d585.pdf
    • http://miamilashsupply.com/uploads/1/3/0/7/130776138/36e17.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_off00007604.bin
1ec1ed98e83c9ba522f001db9c9b005b06796480b9a789988f518896dfe18c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7604 8232 bytes
font_01_sfnt_off000095c4.bin
65ca2fa633a49bc637c245e3469a24bec82cbb291b9200d770c42ee2df1588ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95C4 16096 bytes

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