Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d39fc2e4c51ae14…

MALICIOUS

PDF

36.3 KB Created: 2020-05-15 14:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5d025648784c2f942c934ee77c83ae7 SHA-1: 10b7e232df6e0bc92e9671db6c443ed936e954fb SHA-256: 2d39fc2e4c51ae14d2e10a2f5b9c04cef61652d0b9f7803cbdb7a6dd80cb64bc
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files with numeric slugs, characteristic of SEO link farms. The document body explicitly mentions 'armed heist apk mirror', indicating a lure to download potentially malicious applications. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baylandesign.net/uploads/1/3/1/1/131164456/131164456.html#armed+heist+apk+mirror
    • http://thewomensentrepreneurclub.com/uploads/1/3/0/6/130620624/4825405.pdf
    • http://hhdeno.com/uploads/1/3/0/2/130289279/visuxo-loxiduseze.pdf
    • http://m2enterprises.org/uploads/1/3/1/4/131453485/girafiko.pdf
    • http://africancatclub.com/uploads/1/3/0/6/130620483/425411.pdf
    • http://jbeadvisors.com/uploads/1/3/0/8/130874109/zagezamukoge.pdf
    • http://puertovallartasbestrealty.net/uploads/1/3/0/2/130271184/zuviselanegi_laraxubixun_fagepim_bozinu.pdf
    • http://artofjennifersegal.com/uploads/1/3/1/4/131453818/gimuzagel.pdf
    • http://desperadocantina.com/uploads/1/3/0/2/130270777/narupinimusifef_fegep_dorugizurej.pdf
    • http://makingwhoopiepie.com/uploads/1/3/0/2/130273983/9f5e55af0e4.pdf
    • http://btsexpo.org/uploads/1/3/0/2/130273571/nozezidosuv-xipake.pdf
    • http://andychallmanmusiceducator.com/uploads/1/3/0/7/130776275/26ceb769.pdf
    • http://aryanbhasin.com/uploads/1/3/0/7/130738819/8459081.pdf
    • http://newenglandbabywearers.org/uploads/1/3/0/9/130969813/d44e8867f6d5.pdf
    • http://fillthefloordiscos.com/uploads/1/3/0/5/130550708/0d2459da3e345e4.pdf
    • http://pursuinghope.org/uploads/1/3/0/7/130775759/lilukesu_fatatolalop.pdf
    • http://atlanta-treeservice.com/uploads/1/3/1/0/131071063/6573665.pdf
    • http://mfmillstatltd.com/uploads/1/3/0/7/130775366/mewud-sozexamilate-zalubewogawax.pdf
    • http://bridgeacevent2015.com/uploads/1/3/1/0/131070314/f81d570e4.pdf
    • http://thedatingcircuit.com/uploads/1/3/0/5/130541271/1494013.pdf
    • http://donutpetbeds.com/uploads/1/3/0/4/130477346/c393302e3.pdf
    • http://wisdominbalance.com/uploads/1/3/1/4/131407398/ligipeporoti-zofeduwisuxigo-bedomafot.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_off00006204.bin
2a255f09c7078ce92c2e17eebf9f147acee90475f4ae2f34779dfdce5eff3f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 10344 bytes

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