Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f75524c8f83317…

MALICIOUS

PDF

52.5 KB Created: 2020-03-30 05:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a6719648430ec5e37b3b785674fe232b SHA-1: c76df5211aa0850eac33dce1d47194374144f323 SHA-256: c5f75524c8f833175a82a877a6481c26ab84cd7dcdbd837575eaebe7f2eabca4
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 similarly structured URLs on different domains. The document body contains the phrase 'Pq 1 minuto tem 60 segundos' and references wkhtmltopdf, suggesting a potential lure or redirection mechanism. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of outbound links, likely intended to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://74-123-76-48.mgwnet.com/uploads/1/3/0/5/130589410/130589410.html#pq+1+minuto+tem+60+segundos
    • http://rktttherapy.com/uploads/1/3/0/2/130272488/zovem.pdf
    • http://webmail.collisterunitedmethodist.org/uploads/1/3/0/6/130620657/9451583.pdf
    • http://reallivesofrescue.com/uploads/1/3/0/4/130488616/13b57226b9.pdf
    • http://melinamusiccanada.com/uploads/1/3/0/7/130775378/7198884.pdf
    • http://growintoit.net/uploads/1/3/0/8/130873782/3640173.pdf
    • http://wongafinance.com/uploads/1/3/0/5/130540789/8e4a31125784.pdf
    • http://mta-sts.www.structura.pl/uploads/1/3/0/2/130272385/698101.pdf
    • http://madbuckoutdoors.com/uploads/1/3/1/0/131070539/96f77be6d1983.pdf
    • http://peaceloveangels.com/uploads/1/3/0/9/130969511/mazidukexozorojib.pdf
    • http://dopechristmas.com/uploads/1/3/0/6/130621461/xokekegojegibose.pdf
    • http://tuhfe.com/uploads/1/3/1/1/131164033/844851.pdf
    • http://katherinegaulke.com/uploads/1/3/0/7/130740622/174f0.pdf
    • http://dacunhalaw.com/uploads/1/3/1/3/131384636/rejelujaj.pdf
    • http://tonicbagsshoes.com/uploads/1/3/0/9/130969471/kejulawekutupata.pdf
    • http://themojagroup.com/uploads/1/3/0/7/130775085/dukepupalezawi_wavanubawuxiku_zowokazolemika.pdf
    • http://vagahjalpa.nu/uploads/1/3/1/3/131381088/xoxomarivetuduzumoj.pdf
    • http://time-dating.com/uploads/1/3/0/5/130543980/vosumutimalex.pdf
    • http://geogbarrbeacon.com/uploads/1/3/0/3/130323092/pudokefotamovele.pdf
    • http://elsolmarketing.com/uploads/1/3/0/6/130639368/4149693.pdf
    • http://beertimebrewtours.com/uploads/1/3/0/7/130776218/pinaze.pdf
    • http://cmcarpentryinnovations.net/uploads/1/3/0/7/130776166/6724631.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_off0000891f.bin
d6dfbad6a63f0f5814c881fbda45cf28263fee7af8ea01896fb6d0e7160d79ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x891F 11276 bytes
font_01_sfnt_off0000adbf.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0xADBF 16036 bytes