Malicious PDF — malware analysis report

Static analysis result for SHA-256 7faedb06fb7db0ae…

MALICIOUS

PDF

78.3 KB Created: 2021-04-29 11:08:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2bd94db90e44828cb1ea6e60816ea83 SHA-1: e9db4f7160c03d47084b10a1f15caa4af7966569 SHA-256: 7faedb06fb7db0aebc906d8b6d845a55b2e98cfe6f753d788b0e1512f0cfaf32
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains references to 'Ar 15 magazine capacity california', suggesting a lure to a phishing or malicious site. The embedded URL 'https://jacksth.ru/strik?utm_term=ar+15+magazine+capacity+california' directly supports this phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://jacksth.ru/strik?utm_term=ar+15+magazine+capacity+california
    • http://flathead.us/tovari67ry8.pdf
    • https://cdn.sqhk.co/bijukipuj/gsWzSjf/23188504452.pdf
    • http://bozazareter.iblogger.org/54978194992.pdf
    • http://lnstagramcopyrigtservice.com/26318502646obihl.pdf
    • https://cdn.sqhk.co/miraroki/Vf6zihZ/thumbelina_song_lyrics_youtube.pdf
    • http://cheeronthemove.store/duzom52pap.pdf
    • http://huaweistoreukr.xyz/tic_tac_toe_2_player_appcqp22.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zufomemibuji.rf.gd/blitzkrieg_2_anthology_gog.pdf
    • https://s3.amazonaws.com/zizene/88130044329.pdf
    • https://s3.amazonaws.com/vawoginele/android_sdk_version_19_xposed.pdf
    • http://zotinebid.epizy.com/juboxakexosusivopobot.pdf
    • https://s3.amazonaws.com/gumagabu/bifujekak.pdf
    • https://s3.amazonaws.com/godewumazek/banjara_song_wapwon_live.pdf
    • https://s3.amazonaws.com/tedowafomaru/wezamu.pdf
    • https://s3.amazonaws.com/kuboki/dover_christ_church_academy_uniform.pdf
    • https://s3.amazonaws.com/puretulenuza/medea_euripides_gredos.pdf
    • https://s3.amazonaws.com/bodajaku/joking_hazard_rules.pdf
    • https://s3.amazonaws.com/xunilukegez/mamotesakurazabafosexej.pdf
    • https://s3.amazonaws.com/tuxenipup/hallow_s_end_wotlk_guide.pdf
    • http://mozutebileba.rf.gd/deskripsi_bayam_merah.pdf
    • https://s3.amazonaws.com/geradi/printable_calendar_template_july_2018.pdf
    • https://s3.amazonaws.com/jaloto/12901217566.pdf
    • http://wovidoxof.rf.gd/cognitive_bias_poster.pdf
    • https://s3.amazonaws.com/jenisozazewubo/pilewovubutu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef6b.bin
cf0f9ff21d9cf90689d29791481f7aaacdc1fddb07704600297a7feb7f6e589f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6B 5476 bytes
font_01_sfnt_off0001021b.bin
f34c823b29525c9cbf1a1b70e17fa47e4b68637379574567d92420043e0bf3c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1021B 11668 bytes