Malicious PDF — malware analysis report

Static analysis result for SHA-256 4796b30e956db433…

MALICIOUS

PDF

50.0 KB Authoring application: Scribus
MD5: 26c967430a0e0b5980fe53690943f698 SHA-1: 333fa17b5b70cba8b1e6d5416ce756556adc1e3e SHA-256: 4796b30e956db43302092cea6ad888f57424327770de31d462fa365ee41638db
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves directing users to a network of linked documents, likely to obscure the ultimate malicious destination or to maximize search engine visibility for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://petrapreschool.net/uploads/1/3/0/5/130545932/sixotixizevarepepo.pdf
    • http://risingartistfestival.com/uploads/1/3/0/2/130292110/691107.pdf
    • http://dreamcatalyst.org/uploads/1/3/0/2/130287893/3955a559950f8f.pdf
    • http://okanp.org/uploads/1/3/0/5/130550974/rawerareme.pdf
    • http://wishfulvintage.com/uploads/1/3/0/6/130621113/be3dc0cc63cc700.pdf
    • http://aworldinneed.org/uploads/1/3/0/4/130488619/timom.pdf
    • http://nofime.jkesoluciones.com/uploads/2020/01/27/vageremibaxibi.pdf
    • http://xili.speacetech.us/uploads/2020/01/27/komodevi-zuguwen-ruxozuminad.pdf
    • https://nerinevod.weebly.com/uploads/1/3/0/5/130590339/wogirewix.pdf
    • https://worasapam.weebly.com/uploads/1/3/0/5/130541023/xegevaged.pdf
    • http://humannaturefoundation.com/uploads/1/3/0/6/130620380/d16807f7881.pdf
    • http://morgan-lindsey.com/uploads/1/3/0/5/130545360/961e01ba4e.pdf
    • https://napanovesuzoloj.weebly.com/uploads/1/3/0/5/130543035/2e0390a9.pdf
    • http://michellemarabella.net/uploads/1/3/0/6/130605283/tenesiwegumapuxu.pdf
    • http://tabiat.ru/uploads/2020/01/27/panevumax-xixorapudazas-gelorezowilol.pdf
    • http://amxbtc.com/uploads/2020/01/27/rorimojozanarikajite.pdf
    • http://tofawumat.woltag.com/uploads/2020/01/28/4736406.pdf
    • http://caniborrowthat.net/uploads/1/3/0/5/130588695/982457.pdf
    • http://vizew.grmo.xyz/uploads/2020/01/28/zunoxum_sutunasuka_nefipigew.pdf
    • http://ajhollowayministries.com/uploads/1/3/0/2/130272648/de3fe6058.pdf
    • http://nobuhotelmarbella.devsite-1.com/uploads/1/3/0/5/130589362/130589362.html#ammadi+ammadi+song+free

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015ef.bin
9befb1b6328331b020796b237facbfa8cf1b17074faa7db3e6f4a795c5790758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15EF 8532 bytes
font_01_sfnt_off000063d1.bin
a2e4b4e78c84622bd9f2ee6228d5f15fe0372bcc715508615638d1f2ebd56930		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D1 9204 bytes
font_02_sfnt_off00007b4c.bin
ac49849b978058f48725d089179747450f7987fdfd4cddbc63fac11af8b99083		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4C 16384 bytes

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