Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfa7f988c7635bb…

MALICIOUS

PDF

51.1 KB Authoring application: PDF Studio
MD5: face6826cca44621de34ea9473d84e35 SHA-1: c722357b394255aec165b6cdb0fa7094a79aa15b SHA-256: 9bfa7f988c7635bbeb9ac9e384af2ec4b5478c71594c1778a445a117558511d4
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted across various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is commonly used to create link farms for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, indicating it is likely a phishing or redirection lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://atcofootdoc.com/uploads/1/3/0/3/130313114/wozav.pdf
    • http://andrewdpaterson.com/uploads/1/3/0/6/130604737/2e3731c3c565.pdf
    • http://sbedard.ca/uploads/1/3/0/2/130272981/konina-lesakom-nekuja-bujeladikadala.pdf
    • http://candidateswillsoar.com/uploads/1/3/0/3/130313130/9378390.pdf
    • http://ropagemi.smaph.ru/uploads/2020/01/29/5532745.pdf
    • http://quirkydogartwork.com/uploads/1/3/0/2/130271111/vetako.pdf
    • http://1169certified.info/uploads/1/3/0/6/130621407/senoxoseroduz_gaduradeto_wepako.pdf
    • https://lebiteverugoti.weebly.com/uploads/1/3/0/5/130589128/6584054.pdf
    • http://getfitwear.ru/uploads/2020/01/29/delakuguwibo_siguxu_suvuresex_xizuw.pdf
    • http://camplakeoutfitters.com/uploads/1/3/0/6/130604054/xesizafog_xoravo_dukesafixeli.pdf
    • http://hypocotyle.ru/uploads/2020/01/29/juzaridetaxetagax.pdf
    • https://nositexilodupaj.weebly.com/uploads/1/3/0/6/130604583/141a6.pdf
    • http://penninsulatech.com/uploads/1/3/0/4/130435738/kaxeputexenagapa.pdf
    • http://mycorporateteambuilding.com/uploads/1/3/0/3/130379427/4021919.pdf
    • http://wilofare.bookmeup.website/uploads/2020/01/27/gewuka_deziguvejatil_megikawituzug.pdf
    • http://wadsworthpersonalinjury.com/uploads/1/3/0/6/130604597/7179790.pdf
    • http://nomadicescaperoom.com/uploads/1/3/0/5/130544811/b74693ae4b51d.pdf
    • http://miwejof.moskowremont.ru/uploads/2020/01/28/lagodo.pdf
    • http://xixaxopur.iqnavi.su/uploads/2020/01/29/tezuxolovafidu-bowituxumo.pdf
    • http://mxmsupport.com/uploads/1/3/0/6/130603673/6477023.pdf
    • http://moanalipopo.com/uploads/1/3/0/2/130287284/5314272.pdf
    • http://batasadep.nhatminhphoto.online/uploads/2020/01/28/lajok-zakagerolesop-budizepajesol.pdf
    • http://heatherscustomcookies.com/uploads/1/3/0/5/130551184/nagezal_wupojodi.pdf
    • http://dinaw.vivahome.ru/uploads/2020/01/28/4371081.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/3/130379389/130379389.html#accounting+questions+and+answers+on+depreciation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129c.bin
479137eda7e3c55439d72afe635618a353e944b28c837b8320334bbcc99516b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C 8716 bytes

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