Malicious PDF — malware analysis report

Static analysis result for SHA-256 749c69c95e7e7aad…

MALICIOUS

PDF

64.0 KB Created: 2021-03-23 06:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0401108e45e92a81da2dce33b7525c92 SHA-1: 499eb4f7d1a74bdf8dddcb2f1d67285c3c233d77 SHA-256: 749c69c95e7e7aadf50176c91560ac2249cfe3a6edd7a4120c6935703b11cf03
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, indicative of a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9473

Heuristics 4

  • 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.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://golowaki.ru/award?keyword=at+last+chords+pdf
    • https://vidiguwases.weebly.com/uploads/1/3/4/3/134347373/7911879.pdf
    • https://cdn.sqhk.co/janonaset/Vdhgkgi/7641784166.pdf
    • https://gubelowilesatu.weebly.com/uploads/1/3/0/7/130739845/tofone_sisigor.pdf
    • https://degexaxi.weebly.com/uploads/1/3/1/4/131406510/pojasig.pdf
    • https://fofavaduk.weebly.com/uploads/1/3/4/4/134436242/8fdf2c3.pdf
    • https://cdn.sqhk.co/zarifabidit/ifjbbGD/50058971842.pdf
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/miresame_bilinerade_nexajipu.pdf
    • https://fipogelijemebu.weebly.com/uploads/1/3/1/3/131398193/pipojerejov-vapopoxevafino-rakejim.pdf
    • https://cdn.sqhk.co/jikikavadaja/f6hgTDW/89434152752.pdf
    • https://sukizasatesez.weebly.com/uploads/1/3/4/6/134686833/0db101b6413a.pdf
    • https://vetebifarex.weebly.com/uploads/1/3/4/0/134016991/154970.pdf
    • https://cdn.sqhk.co/wazafanez/DicZdPX/gimurodagezomuxirowib.pdf
    • https://cdn.sqhk.co/vomisape/nvPhagd/bandicam_download_no_watermark.pdf
    • https://dagatofolake.weebly.com/uploads/1/3/0/8/130874029/zowifelosedomupiruwa.pdf
    • https://sazopugewado.weebly.com/uploads/1/3/1/4/131453094/3626392.pdf
    • https://zujuwaxi.weebly.com/uploads/1/3/5/3/135307850/delukisolegafeme.pdf
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/458153402ece1.pdf
    • https://cdn.sqhk.co/gelowidabik/UA7oidP/overkill_the_walking_dead_steam_download.pdf
    • https://cdn.sqhk.co/zetanitanedo/idgc46C/indpay_app_user_locked.pdf
    • https://cdn.sqhk.co/baluwofuk/cifgejb/monument_valley_2_walkthrough_oasis.pdf
    • https://bukufodukowakaf.weebly.com/uploads/1/3/5/2/135294854/mizol_vojaruxuxumi_jitex_rexesolipofe.pdf
    • https://cdn.sqhk.co/kexofebiziv/idKgfjO/9611420283.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fc629db2-27d3-43ce-a78d-a105b9eea810/i_too_langston_hughes_poem.pdf
    • https://uploads.strikinglycdn.com/files/b8251c1e-efad-4925-85ce-983f7ad5b164/six_of_crows_netflix_series_release_date.pdf
    • https://uploads.strikinglycdn.com/files/e1e17a87-5b86-401f-85a1-fbbe3a32768e/how_to_play_blackbird_on_piano_chords.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e188.bin
223376723cdc0317642be84408463cc803aa80f8cf7154139a93af5f1f8b0d13
pdf-font-stream PDF embedded font (sfnt) at offset 0xE188 5232 bytes