Malicious PDF — malware analysis report

Static analysis result for SHA-256 13e995829fe7523a…

MALICIOUS

PDF

66.6 KB Created: 2021-02-28 04:29:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5794c34f69c785de9edd93073439c39a SHA-1: ec5c9188e8a518abd689bb2ea045694e796a20ac SHA-256: 13e995829fe7523a45d87dccc17e1c904d71308a0bdbb6037e6521eec441e9f8
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the heuristic findings suggest the document's primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8366

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dugedepap.ru/aws?utm_term=islamic+names+dictionary+bangla
    • https://cdn.sqhk.co/daposofoxig/5ha6E5U/97443455043.pdf
    • http://lnstagramverifycentre.com/durizi2ykp7.pdf
    • http://exemplpusj.com/17528385837ztmzi.pdf
    • http://sajiwurejedetu.sportsontheweb.net/xre_22_srm_8012.pdf
    • http://kofodotig.sportsontheweb.net/foscam_f18918w_ip_camera_tool.pdf
    • http://file-id.ru/54398542709sohmw.pdf
    • https://cdn.sqhk.co/mugukawi/bXiigjt/88038144762.pdf
    • http://nesorus.mywebcommunity.org/6920485953.pdf
    • http://micrometerdigital.xyz/2685344498540c7a.pdf
    • https://cdn.sqhk.co/dosiloxof/bir1NWr/93584984442.pdf
    • http://heliusdesign.ru/lefoxabovewosifopakoxkle8.pdf
    • http://tokexal.medianewsonline.com/how_to_solve_fghx.pdf
    • http://sadovik.me/audi_a4_b6_avant_trunk_sizeit5sp.pdf
    • http://meetchat.space/tamilrockers_2016_tamil_dubbed_hd_moviesx2gjn.pdf
    • http://starkrobotics.org/james_patterson_book_order_alex_cross8s3a6.pdf
    • http://amsidisi.xyz/hold_the_line_challenge_guide6cdg0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pavujiniz/blasterjaxx_gasolina_bootleg.pdf
    • https://s3.amazonaws.com/metakibeme/32874485948.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd0f.bin
6cfe9692f041e586b9d4775c0308c2a2688ae64b5765b1aebef09071cb88ce60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0F 5440 bytes

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