Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91c87a6846b376c…

MALICIOUS

PDF

138.7 KB Created: 2020-04-17 17:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 939c067cd0bf425b9b6015b310e8ea9a SHA-1: 57752627d181f87b3e86741c0bf10f5c9b909d5a SHA-256: d91c87a6846b376c01690af674c5d7abadb1a49702513faa107534b77075dc51
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO poisoning or directing users to malicious sites. The document body mentions 'Facebook dark mode 2019 apk', suggesting a lure to download a fake application. The primary heuristic identified a link farm structure, indicating a coordinated effort to distribute links across multiple domains. No scripts were extracted from this sample.

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://aulan.world/uploads/1/3/0/5/130543318/130543318.html#facebook+dark+mode+2019+apk
    • http://weddingsbyzaib.com/uploads/1/3/0/8/130813992/finigipepil_jemokivadirol_mufoku.pdf
    • http://meridianadvisorsusa.net/uploads/1/3/0/6/130620861/ce0962cfa8a0549.pdf
    • http://artbyjohnmarquard.com/uploads/1/3/0/5/130541137/5b862ce52f3.pdf
    • http://maggiesaersfoodforliving.com/uploads/1/3/0/5/130546593/sigifezex.pdf
    • http://kaspentravel.com/uploads/1/3/0/6/130621940/jizudo_dezudisorene_wazim_tekud.pdf
    • http://photographybylaceyli.com/uploads/1/3/1/3/131398582/depatanetinupimin.pdf
    • http://rockymtnfirepro.com/uploads/1/3/0/6/130621809/botelunitixal_nipivinifop_wakugulufi.pdf
    • http://cpicweb.com/uploads/1/3/0/5/130541677/4090999.pdf
    • http://leftbanklegend.be/uploads/1/3/0/9/130969624/lelaxijigulopo.pdf
    • http://devhost.bajaj\(6th
    • http://devhost.bajaj(6th
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001cf1e.bin
2d5439c4e2e6ea0f90ddafc761632ec838f9b6ac1d3dd5a3a2423f351b14cb69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF1E 11288 bytes
font_01_sfnt_off0001f7b8.bin
7ac8759f6f71c33f8f5bad5d2fe86e28dd137252f4eb086882e54a8c447c5691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F7B8 2884 bytes
font_02_sfnt_off000203e7.bin
190c9b76a23ffe75e33c15d2e2b06e0338ec12440b018d1794016b0017697eee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x203E7 17356 bytes

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