Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde86cdfa9cfa679…

MALICIOUS

PDF

38.0 KB Created: 2020-04-17 15:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1904dc1697f3f15293c1f7dbfe5dd4b0 SHA-1: 898c89dedaeda52e8c4ad4ee9a65a93dc75a401b SHA-256: cde86cdfa9cfa679f651128bc752658c1b6f8a685d527a9812fb28f16a377f77
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are structured as SEO-friendly URLs pointing to PDF documents. The heuristic 'SE_INVOICE_LURE' suggests a fake invoice or payment lure. The presence of numerous external links, combined with the lure, indicates a likely attempt to redirect users to malicious content or phishing pages. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://capefearforge.com/uploads/1/3/0/6/130620637/130620637.html#2016+auditor+general+report+ghana
    • http://beaufortvacationrental.com/uploads/1/3/1/4/131407021/goxusowob_kinuk.pdf
    • http://woutervandermaden.nl/uploads/1/3/0/6/130605217/tutokejo-vodosiduzu.pdf
    • http://aguayoperformance.com/uploads/1/3/1/1/131164081/985895.pdf
    • http://incomparablelove.com/uploads/1/3/0/5/130589381/8617022.pdf
    • http://theyvibe.com/uploads/1/3/0/6/130603942/ef05d3a30251e.pdf
    • http://keywordsmostsearched.com/uploads/1/3/0/7/130738704/lixatejogosowu-vusigodofogazub-tetali.pdf
    • http://jtscleaningservices.com/uploads/1/3/0/3/130379133/ac12d5b.pdf
    • http://guerssports.com/uploads/1/3/1/4/131455543/07719f9bd.pdf
    • http://artisanduluxe.com/uploads/1/3/0/5/130550789/kidak-mubazajes-gerilovonofab-vegatuz.pdf
    • http://51startnew.com/uploads/1/3/0/9/130969639/4493899.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_off000061c1.bin
a6b931b81d0e33fa0b2ba9e13a206ddcfe362280ecd02b0877f3ce006acf8b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C1 7964 bytes
font_01_sfnt_off000080a7.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A7 2652 bytes

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