Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec5eb4126430511…

MALICIOUS

PDF

51.3 KB Created: 2020-04-06 03:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7a79e8a7b3f21c36953c653487f43efd SHA-1: 785f49a59db3283671d54da47ae8ef65b75a4d33 SHA-256: 7ec5eb412643051144b3cfd302ab2b64e42fbae99e6ad908f37d7a8b2db35141
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, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. The primary attack pattern involves luring users to external content via these links.

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://fallenvillain.com/uploads/1/3/0/7/130775424/130775424.html#que+es+un+numero+cuantico+magnetico+yahoo
    • http://laksideoakspark.com/uploads/1/3/0/5/130588624/vapem-bukomezaluvena-nugazukagaraso-pesenuwoxefiz.pdf
    • http://matt4claremont.com/uploads/1/3/0/3/130323148/be67cc1.pdf
    • http://abc-revizija.si/uploads/1/3/0/2/130289551/75fc81.pdf
    • http://bluetideconsulting.net/uploads/1/3/0/4/130436163/1542380.pdf
    • http://accepteen.com/uploads/1/3/0/5/130590191/dusakomivakiratog.pdf
    • http://cavecanemcolectioni.com/uploads/1/3/0/4/130476161/tirimumib-wakirodujuxi-kajikojar.pdf
    • http://routeonepumpkins.com/uploads/1/3/0/8/130873715/jupega-sifulu-vexizawowami.pdf
    • http://dodsquared.com/uploads/1/3/1/0/131069987/fujewuzono-tojebabizud.pdf
    • http://prologixsa.com/uploads/1/3/1/4/131483356/08155393c8a.pdf
    • http://16quarters.org/uploads/1/3/0/8/130874380/mimunilanizaji.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_off00008cd1.bin
83111775f6305775f06a3ced9e99acb405d443f3f1280fe81df29aa8ed9304f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 10396 bytes
font_01_sfnt_off0000b1bf.bin
885781ec91db75dc8c4a6a3d3dac0324bdfdb8f2239dab70466c62035ae072da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1BF 4144 bytes

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