Malicious PDF — malware analysis report

Static analysis result for SHA-256 714a9359a5f421b5…

MALICIOUS

PDF

45.9 KB Authoring application: Solid Converter PDF First seen: 2020-09-04
MD5: 5881d419611005fa7ee2a8a48ab189d9 SHA-1: d41d8e6c1bb29d791d7ef7eaf6fe4bbbf93aca82 SHA-256: 714a9359a5f421b584e0eb5111b4389d40fa015a5e44b4fea862f201d8193924
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with 31 links pointing to other PDF files hosted on various domains. This technique is often used to distribute malware or phish for credentials. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://themanadvice.com/uploads/1/3/0/4/130483634/tujukunigatezin.pdf In PDF document text
    • http://howtobeaweddingcoordinator.com/uploads/1/3/0/6/130622080/4543061.pdfIn PDF document text
    • http://magimafr.ovh/uploads/2020/01/27/mobejote.pdfIn PDF document text
    • http://planettammy.com/uploads/1/3/0/5/130539203/22d63ae6651a42.pdfIn PDF document text
    • http://bej.remont-msk4.icu/uploads/2020/01/28/968435.pdfIn PDF document text
    • http://africancatclub.com/uploads/1/3/0/4/130483737/8249776.pdfIn PDF document text
    • http://mineralintelligencecapital.com/uploads/1/3/0/5/130590538/2e925fd.pdfIn PDF document text
    • https://baxojujo.weebly.com/uploads/1/3/0/5/130550768/6261952.pdfIn PDF document text
    • http://mrhealy.com/uploads/1/3/0/5/130538875/8165289.pdfIn PDF document text
    • http://deventermanueletherapie.nl/uploads/1/3/0/6/130604737/gudoxofiveroziva.pdfIn PDF document text
    • http://bujare.loot-ferm.pro/uploads/2020/01/28/7526619.pdfIn PDF document text
    • http://zed.systav.xyz/uploads/2020/01/28/vukubekibutaw.pdfIn PDF document text
    • http://mer.proastrologiu.ru/uploads/2020/01/28/3695629.pdfIn PDF document text
    • http://club8inch.com/uploads/1/3/0/2/130274028/xoxibawupefaboku.pdfIn PDF document text
    • http://radioevasi.com/uploads/1/3/0/4/130435602/46107ac3.pdfIn PDF document text
    • http://shiftingtides.net/uploads/1/3/0/4/130489572/kudajalowi.pdfIn PDF document text
    • http://musobap.brothersrating.com/uploads/2020/01/29/fuzafadotado-rigatofapitone-xenubujesobuj-fenifegipid.pdfIn PDF document text
    • http://sax.audiostart08.icu/uploads/2020/01/29/besetut.pdfIn PDF document text
    • http://lilogisticscenter.com/uploads/1/3/0/5/130589182/d289ac.pdfIn PDF document text
    • https://jijaderufis.weebly.com/uploads/1/3/0/5/130539125/68bd8daec67e.pdfIn PDF document text
    • http://feluzivif.eovma.fun/uploads/2020/01/28/zimavegoluki.pdfIn PDF document text
    • http://xokugumoli.good-power.ru/uploads/2020/01/27/niwawavunikazix.pdfIn PDF document text
    • http://pleaseexcusetheshirt.com/uploads/1/3/0/4/130483990/130483990.html#cars+fast+as+lightning+android+1In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D1 10628 bytes
SHA-256: 47e25402c304737c54e80da14a34eabe37770e0a5d3d5c267346cd3f885d14c5
font_01_sfnt_off00006978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 16872 bytes
SHA-256: 776cefe0b21e16460ff4ae9f3d91de02df802cebc275f85931afcb42ab46a051