Malicious PDF — malware analysis report

Static analysis result for SHA-256 949e2d0608c7f6b5…

MALICIOUS

PDF

65.5 KB Created: 2021-03-01 15:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8ba1119174aa8bc0e704890d1a94671d SHA-1: 11eea88d211febf89ea5e9296debd3e3b10bb565 SHA-256: 949e2d0608c7f6b5b9b817316501e7049d15f86715895ee97dc0822947e75578
184 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs and the PDF's structure indicate it's designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9720

Heuristics 5

  • 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 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.
  • 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://baarspo.ru/strik?utm_term=woodcock+johnson+iv+score+descriptors PDF link annotation
    • https://cdn.sqhk.co/tiviluluje/jjjgfjf/climbing_trails_in_colorado_springs_area.pdfIn PDF document text
    • https://jopegivev.weebly.com/uploads/1/3/4/2/134234712/c8ca904ee35e15.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/hajbrb6/chicken_wheel_screams.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/FCTrhgv/mont_rushmore_deep_purple.pdfIn PDF document text
    • http://kinoogf.space/absolute_threshold_in_consumer_behaviour_exampleszrs5m.pdfIn PDF document text
    • http://berkeciftci.net/niranipugajufijoxekinukibqfsgu.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/UpZjfie/48634506384.pdfIn PDF document text
    • http://autobaff.xyz/words_their_way_primary_spelling_inventory7f1y1.pdfIn PDF document text
    • https://ruxabetuju.weebly.com/uploads/1/3/2/7/132740595/dedemolokukuzar.pdfIn PDF document text
    • http://letxxnx.org/wapafemodof7io3l.pdfIn PDF document text
    • https://jokasagumejede.weebly.com/uploads/1/3/1/0/131070006/5816849.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/96108124606.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/the_selection_movie_netflix_kiera_cass.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuxanewelupeluv.epizy.com/how_to_add_new_user_role_in_wordpress.pdfIn PDF document text
    • http://girigiroret.rf.gd/pandigital_digital_photo_frame_troubleshooting.pdfIn PDF document text
    • http://porilebunenagu.rf.gd/descargar_symbolab_pro_apk_2019.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 4920 bytes
SHA-256: c6b44dc3386ca2d636f4018a90cac7b5fd973d9a191cd8e026cdaabd393dff1e