Malicious PDF — malware analysis report

Static analysis result for SHA-256 3380dd9419ea007e…

MALICIOUS

PDF

43.1 KB Created: 2020-03-30 09:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: cf04c0e0934d6c7aa640b3d1eccd7b2d SHA-1: 294055c2e0f08b7dee4df2d7e9e4441dd62c609b SHA-256: 3380dd9419ea007e6e9f8d332fd6e61d868f9bfdb9f418c93ecc6f40d2cb1c90
94 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified as a PDF link farm. The document body text, though partially obfuscated, includes a URL that points to a file named 'modelo de conciliacion bancaria peru en excel', suggesting a lure related to financial documents. The primary function appears to be directing users to a network of potentially malicious or SEO-abused websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.sipandsigndesign.com/uploads/1/3/0/2/130287495/130287495.html#modelo+de+conciliacion+bancaria+peru+en+excel
    • http://charleroichiropractic.com/uploads/1/3/0/3/130313333/jogefepalubiwelir.pdf
    • http://soapytoad.com/uploads/1/3/1/1/131164421/1409307.pdf
    • http://unityinvestigative.net/uploads/1/3/0/6/130640111/zepopadibatoditawepo.pdf
    • http://juliayoungcurator.com/uploads/1/3/0/7/130776180/zotogexekamuzomut.pdf
    • http://theabbeystl.com/uploads/1/3/0/6/130639873/681e7bb.pdf
    • http://iphonerepairswiss.com/uploads/1/3/0/6/130605230/mosebijowuv-xujasubof.pdf
    • http://arizonaparkingcontrol.com/uploads/1/3/0/3/130323817/0802c622.pdf
    • http://njfishbuilding.com/uploads/1/3/0/3/130323596/218dac0240.pdf
    • http://apdesignsdc.com/uploads/1/3/0/7/130775214/rofebix_porejuleva.pdf
    • http://saraleestudiogallery.com/uploads/1/3/0/3/130323355/8720197.pdf
    • http://joelianminalgo.com/uploads/1/3/0/5/130590322/9444613.pdf
    • http://noiexpedite.com/uploads/1/3/0/2/130274301/90681c3565a7.pdf
    • http://rde-enterprise.com/uploads/1/3/0/9/130969959/misilesux.pdf
    • http://www.pt-stepilotto.com/uploads/1/3/0/2/130270834/talifoxika.pdf
    • http://meidenbeautyfeestjes.nl/uploads/1/3/0/5/130540501/274365.pdf
    • http://ceruleanmanagement.com/uploads/1/3/0/2/130287311/4159996.pdf
    • http://jacquihowson.com/uploads/1/3/0/3/130313345/bisiwu_xopagapagove.pdf
    • http://rescuedada.net/uploads/1/3/0/4/130435722/7b4f08.pdf
    • http://rraff.directaimmedia.com/uploads/1/3/0/5/130588165/89f2b.pdf
    • http://brigliacapitalpartners.com/uploads/1/3/0/3/130379231/dararisodalug_kaxij_bunixekiti_jozofaka.pdf
    • http://m.farragutrobotics.org/uploads/1/3/0/8/130873954/7272568.pdf
    • http://krissyoneill.com/uploads/1/3/0/6/130620957/fed24b.pdf
    • http://hamiltoncrossingindy.com/uploads/1/3/0/5/130588987/bobikivewegube.pdf
    • http://nwgalactation.com/uploads/1/3/0/5/130588344/3832750.pdf
    • http://kingdomnowblog.com/uploads/1/3/1/4/131438471/fa1c01d2af6.pdf
    • http://nwgalactation.com/uploads/1/3/0/
    • 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_off00007de1.bin
3d230161993102e13f426cd7a70aa70629e549154834acf2ad238fbd5e3b15bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 8972 bytes

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