Malicious PDF — malware analysis report

Static analysis result for SHA-256 97368e0cf40ac8bd…

MALICIOUS

PDF

47.3 KB Authoring application: GIMP
MD5: 8d6bcf87f65cc2be0efbe40ff049fbb6 SHA-1: 272fa60fa1f2528b25db65b0167a71f3390f3ac9 SHA-256: 97368e0cf40ac8bd7fdad6222d7b574f5be1d060146d9a24cd4a0bf4352df3d6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This is indicative of a link farm or SEO manipulation tactic, as flagged by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection further supports its malicious nature. The document body itself contains garbled text but also lists many of the same URLs, reinforcing the attack pattern. The primary goal appears to be directing users to a vast collection of external links.

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://wallinba.com/uploads/1/3/0/6/130621740/vojimavu.pdf
    • http://nakivumofi.monplezir.su/uploads/2020/01/28/luronaro-setulox.pdf
    • http://baarleproeft.com/uploads/1/3/0/5/130551343/4331592.pdf
    • http://nextgentheatreco.com/uploads/1/3/0/6/130639681/luzezidusuvubo-fifaparenobuz-getitoxot-bezofupap.pdf
    • http://pamela-johnson.com/uploads/1/3/0/6/130640013/5e5dc524.pdf
    • http://perthkitchendoorreplacement.com.au/uploads/1/3/0/6/130621426/9698923.pdf
    • https://bedegobibise.weebly.com/uploads/1/3/0/4/130483390/3477141.pdf
    • http://leahwebbcolor.com/uploads/1/3/0/5/130539455/zexezovajewo.pdf
    • http://musicadventure.net/uploads/1/3/0/2/130288603/powogopod-xesorudutapoxob.pdf
    • http://rfleasingga.com/uploads/1/3/0/5/130551772/tiwexuxefilife_wesipuze_dawevokofipunoj.pdf
    • http://quiltwithme.org/uploads/1/3/0/4/130436163/6b5e87762a42.pdf
    • http://charlotteconsciousconnections.com/uploads/1/3/0/4/130475918/31598c6320bfe5c.pdf
    • http://lok.uveliria.com/uploads/2020/01/28/dalenela.pdf
    • http://roswellwaterproofing.com/uploads/1/3/0/6/130620773/1679647.pdf
    • http://minigoldendoodlesutah.com/uploads/1/3/0/2/130289613/xixidi.pdf
    • http://govexipisi.xelamit.ru/uploads/2020/01/28/wivofaxatujalojinovu.pdf
    • http://ziturijuli.skynetdonate.xyz/uploads/2020/01/27/digamor.pdf
    • http://barclaysme.com/uploads/1/3/0/5/130541313/dasokuwokifi.pdf
    • http://nak.atrilmedia.com/uploads/2020/01/28/fatutupe_fovipegama_juxojem_faxedewet.pdf
    • http://djsacademy.com/uploads/1/3/0/6/130640059/130640059.html#bound+to+you+piano+sheet+music+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001677.bin
a97fe73b3e590eae94e1611111dbfa9837b1bbbef81e00fdeb6530065f7b2f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1677 9304 bytes
font_01_sfnt_off000068b0.bin
d03c4c3f4385a35f2da112bd5be13db992e1ab89286f910b92fb446a7b68f840		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B0 19248 bytes

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