Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c24654f3a9588b…

MALICIOUS

PDF

50.2 KB Authoring application: pstoedit
MD5: a5c7ca8800cd86c7d8366000a6a1a664 SHA-1: ed4667bd0fe3c05bd444ab9972cdf99582135fd7 SHA-256: 71c24654f3a9588bddeb15a12abbd148a71bd670cd4c750c82ee6b0e4b940584
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to host malicious content. ClamAV detected this file as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or malicious redirection attempt. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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://jex.tvori-shedevr.ru/uploads/2020/01/29/satulabatej.pdf
    • http://realestaterod.net/uploads/1/3/0/6/130620470/ea0c6bd4cba1f7.pdf
    • http://the57eatery.com/uploads/1/3/0/3/130379522/zigawekupig.pdf
    • http://actorheadshotphoto.com/uploads/1/3/0/2/130291485/darodiwekitomoseso.pdf
    • http://pagesdale.com/uploads/1/3/0/5/130588288/8177885.pdf
    • http://smaakfestijn.nl/uploads/1/3/0/6/130620792/b25415f1aa0961b.pdf
    • http://tattoosbyaross.com/uploads/1/3/0/2/130270808/desokokiwel.pdf
    • http://efl.su/uploads/2020/01/29/zuvekebedume.pdf
    • http://randisdollhouse.com/uploads/1/3/0/5/130542908/fasiboku.pdf
    • http://pipes-underground.com/uploads/1/3/0/2/130271111/doxekagosuw-lagonanuv-xarafikaf.pdf
    • http://saw.specodegda-kemerovo.ru/uploads/2020/01/28/sunudemexinuxa.pdf
    • http://anotherplacecalledhome.net/uploads/1/3/0/5/130590521/viworidodaziro-zutogidapopope-lizaduw-nunemupokegu.pdf
    • http://susangancherjewelry.com/uploads/1/3/0/2/130289738/6d289deed5bb1a3.pdf
    • http://fodova.vipiski-besplatno64.icu/uploads/2020/01/27/07c147dc6cc3.pdf
    • http://avteurope.com/uploads/2020/01/27/6295633.pdf
    • http://romenixav.design-interior.su/uploads/2020/01/27/noguraxipa.pdf
    • http://damunuzik.tailgaitproweb.xyz/uploads/2020/01/27/zomukel_bowajof.pdf
    • http://pejikezim.homka.online/uploads/2020/01/27/wudulidadapemo-zodejorexuli-jazumawakiki.pdf
    • https://labesikujix.weebly.com/uploads/1/3/0/4/130476216/gexesugez-muzowefop-torubowolunuzu.pdf
    • http://djsacademy.com/uploads/1/3/0/6/130620897/130620897.html#manfrotto+190xb+496rc2
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001669.bin
ecba7e967d5d4514ecae7b66e3cf667cf16137763da763de0f9f2b933f41e50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1669 9320 bytes
font_01_sfnt_off00007d21.bin
669a22844ddb84b64a1d93eb6147c2b8b7ca76f4316fe4be2bbf69c96252e72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D21 16180 bytes

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