Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eebbd5b89cc1390…

MALICIOUS

PDF

59.5 KB Created: 2020-03-30 10:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 42f32b9719deb2fe4110c2229e812e7a SHA-1: a7c539711fd448187530b0bcf078353da06d58cc SHA-256: 7eebbd5b89cc13909e9e19af2c8ef4d7dd1c2fe11864f936fbe2a01fff8d0dbc
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to PDF files hosted on various domains. The document body text, though partially corrupted, includes a reference to 'Calendario pre registro comipems 2020' and the authoring application 'wkhtmltopdf', suggesting a lure for registration information. The primary heuristic 'PDF_SEO_LINK_FARM' indicates a technique to generate traffic or distribute content through a large number of linked PDFs. The embedded URL also points to an HTML file with a similar registration theme.

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://74-123-76-23.mgwnet.com/uploads/1/3/0/6/130620564/130620564.html#calendario+pre+registro+comipems+2020
    • http://melaniedietrich.com/uploads/1/3/0/8/130874085/7325800.pdf
    • http://greerblackmon.com/uploads/1/3/0/2/130289658/debopinokopo.pdf
    • http://stillwelltrailersales.com/uploads/1/3/0/6/130605447/welaxijizizakaviguxa.pdf
    • http://jeandoyendemontaillou.com/uploads/1/3/0/6/130604787/zexiv.pdf
    • http://embroidesign.com/uploads/1/3/0/2/130272318/5a69e6d441.pdf
    • http://harvesthealthandfitness.com/uploads/1/3/0/5/130590778/bosalatirog.pdf
    • http://majasmote.net/uploads/1/3/0/2/130270743/05e609fb89.pdf
    • http://hamelinkfarms.com/uploads/1/3/0/5/130551749/latas_xisejak_busumiru.pdf
    • http://hempdreamweaver.com/uploads/1/3/0/5/130543536/tepeduvuku.pdf
    • http://waggawaggaprobus.waggamatters.com/uploads/1/3/0/3/130379423/232b253a2bd0e9c.pdf
    • http://excercis-ng.com/uploads/1/3/1/3/131381237/3779027ef.pdf
    • http://rpwbeauty.com/uploads/1/3/0/6/130639468/vumixazagagajufo.pdf
    • http://horbtn.org/uploads/1/3/0/5/130588337/vosolufudi.pdf
    • http://montserratandco.com/uploads/1/3/0/6/130604108/gowogegodur.pdf
    • http://galileobrazil.com/uploads/1/3/0/7/130738693/feweli_nisofo.pdf
    • http://childrenshospitalholidaycardproject.org/uploads/1/3/0/7/130739875/2ab34a7bda.pdf
    • http://binnach.com/uploads/1/3/0/5/130589444/damisafipifu-wofalapa-duvedobuwazux-vekopuzeb.pdf
    • http://livingworkfreedom.com/uploads/1/3/0/5/130550754/fodovadovopife.pdf
    • http://pisteciclabili.net/uploads/1/3/0/4/130483519/1367999.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_off0000bbfd.bin
1d3f9925f8152b8c6f85f30b1f38ccb11ff292b19f602916d34cef88e49c959d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBFD 9736 bytes

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