Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1de6448b748d59…

MALICIOUS

PDF

65.2 KB Authoring application: OpenOffice Draw First seen: 2021-09-24
MD5: 2c1a4fd67b4e1efad179fde8d30950c6 SHA-1: 057c8a8c209e62bdd7c9f6fdd234962787c0163c SHA-256: bb1de6448b748d595a60d3ce9bcdec8497d4d1def4f75be4008d8fc10a47d1ba
152 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7648396-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7648396-0
  • 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.
  • 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://vep.event-essence.com/uploads/2020/01/28/rikurukoduwira.pdf In PDF document text
    • http://gypsyangler.com/uploads/1/3/0/2/130288338/pimuwofinojunomakor.pdfIn PDF document text
    • http://parigono.infospina.ru/uploads/2020/01/28/3692225.pdfIn PDF document text
    • http://lifeshop.icu/uploads/2020/01/27/3377390.pdfIn PDF document text
    • http://rexcommunicationsllc.com/uploads/1/3/0/3/130323733/kowokivu.pdfIn PDF document text
    • http://longhorncaverns.net/uploads/1/3/0/4/130476144/8011035.pdfIn PDF document text
    • http://bojon.0406shopps06.fun/uploads/2020/01/27/1e2860760ca0.pdfIn PDF document text
    • http://telapupi.alika.icu/uploads/2020/01/27/7922027.pdfIn PDF document text
    • http://z-kiski.fun/uploads/2020/01/27/mojokawejiwe-delisavi-bidemepu.pdfIn PDF document text
    • http://stemteachershou.net/uploads/1/3/0/2/130289481/10266bff7cc.pdfIn PDF document text
    • http://xunolaguki.sitol.ru/uploads/2020/01/27/224461af241.pdfIn PDF document text
    • http://zevazulaz.zayms.icu/uploads/2020/01/28/tinigozumox.pdfIn PDF document text
    • http://myartscout.com/uploads/1/3/0/3/130379604/vozaxij.pdfIn PDF document text
    • http://beers.sg/uploads/1/3/0/5/130589163/1064d4723d23809.pdfIn PDF document text
    • http://suvim.nasdwkas.icu/uploads/2020/01/28/nosepor.pdfIn PDF document text
    • http://tig.jetscan.tech/uploads/2020/01/27/f9aef051c1bb.pdfIn PDF document text
    • https://lofewijafedo.weebly.com/uploads/1/3/0/5/130588635/461149ce0fe.pdfIn PDF document text
    • https://subaviji.weebly.com/uploads/1/3/0/3/130323324/zawulumu.pdfIn PDF document text
    • http://miw.sportintour.ru/uploads/2020/01/27/1f946dc32e6e.pdfIn PDF document text
    • http://konu.kommmituns.com/uploads/2020/01/28/2055667.pdfIn PDF document text
    • http://wildbeastfeast.com/uploads/1/3/0/6/130604350/fofimoxaxaz_penafamazaki_kimemovagove.pdfIn PDF document text
    • http://1m3dp.com/uploads/1/3/0/3/130313141/5852530.pdfIn PDF document text
    • http://mybowerstudio.com/uploads/1/3/0/2/130289765/130289765.html#mercer+frey+voice+actorIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC 8056 bytes
SHA-256: d0bb68f5425d0e44c4d8f8e9573a25421cdd757bbf17fcac245e85b6ff96eef0
font_01_sfnt_off0000ae25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE25 16600 bytes
SHA-256: 61fecad0f0fabc08cd1af72ec870a66fc31b3b4bc98633cb8414789fadfa4c09
font_02_sfnt_off0000c444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC444 2596 bytes
SHA-256: 87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e

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