Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac4617818afcb50c…

MALICIOUS

PDF

36.6 KB Created: 2020-06-03 22:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e2b222d75024c7c364651ef4d6e616a SHA-1: 44a493bac2815b73a4eece4e3a3c4c41cc5bf79e SHA-256: ac4617818afcb50cf38298fde07156e71fcdedae2249385c4f3c92c476d84ade
62 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a heuristic detecting a large farm of external links. These links, such as http://lq.undesirable.us/uploads/1/3/0/8/130874666/130874666.html#a.+jan+marcussen and http://hollyebrown.com/uploads/1/3/0/2/130287302/6394487.pdf, are likely designed to lead users to phishing sites or download further malicious content. The document body itself contains metadata and a truncated version of these links, reinforcing the malicious intent.

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://lq.undesirable.us/uploads/1/3/0/8/130874666/130874666.html#a.+jan+marcussen
    • http://hollyebrown.com/uploads/1/3/0/2/130287302/6394487.pdf
    • http://webdisk.kucanadan.com/uploads/1/3/0/4/130483647/jekewajefuwatir.pdf
    • http://bargainlivingeugene.com/uploads/1/3/0/2/130289503/d7e61822.pdf
    • http://upennspecialdeliveries.com/uploads/1/3/0/7/130776027/3317620.pdf
    • http://grayscaleconstruction.com/uploads/1/3/0/7/130740443/wegeju_tifosis_butefasilazarek_bivemarusatasuf.pdf
    • http://ezohome.com/uploads/1/3/1/8/131871912/9390459.pdf
    • http://abilitycounts.net/uploads/1/3/0/5/130588395/gogoruroken-zibozupasafomog.pdf
    • http://outdoorcore.org/uploads/1/3/1/4/131437941/rebes.pdf
    • http://tailsntrailsllc.net/uploads/1/3/0/6/130622084/2903915.pdf
    • http://mail.wilsonscenic.com/uploads/1/3/0/7/130775567/moluzevakasiba.pdf
    • http://hostmaster.costumeunderground.co.uk/uploads/1/3/0/5/130551559/1181918.pdf
    • http://hostmaster.peaceplaceinc.org/uploads/1/3/1/4/131453330/d311c9769b380b6.pdf
    • http://lq.undesirable.us/uploads/1/3/0/8/130874666/terms.html
    • http://lq.undesirable.us/uploads/1/3/0/8/130874666/dmca.html
    • http://lq.undesirable.us/uploads/1/3/0/8/130874666/policy.html
    • https://pomuxiwuk.files.wordpress.com/2020/06/maketibakezigudi.pdf
    • https://jesebenoj.files.wordpress.com/2020/06/ponawirusekididifogafuv.pdf
    • https://nuwiburamo.files.wordpress.com/2020/06/xaketuvuji.pdf
    • https://favogevi.files.wordpress.com/2020/06/noweniditajuguxenegi.pdf
    • https://nijarabukexi809583250.files.wordpress.com/2020/06/3191580657.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/
    • https://nuwiburamo.files.wordpress.com/2020/06/xa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ad.bin
9907024aa172334c73c60978b08a1b6211039f55f9780dd8ba73c638b18794ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AD 10224 bytes

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