Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73a605177cb7307…

MALICIOUS

PDF

73.3 KB Created: 2021-03-12 21:21:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f78811ec6f534f03a523a14d1fe4b33 SHA-1: 163281d4ba6bbee77e1a03f3898773442c572c42 SHA-256: f73a605177cb7307158035b690bf6daf4c7744000a8e7dfacd320863eb4b988a
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URL and the 'SE_INVOICE_LURE' heuristic suggest the document is designed to trick the user into visiting a malicious website, likely for phishing or to download further malware. The document body, though partially corrupted, contains keywords related to bookings and solutions, reinforcing the lure aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://golowaki.ru/award?keyword=buchungss%25C3%25A4tze+%25C3%25BCben+mit+l%25C3%25B6sungen+pdf
    • https://tawusizigegik.weebly.com/uploads/1/3/3/9/133997505/wisenogigu.pdf
    • https://cdn.sqhk.co/xonivozew/hbibzZO/events_in_atlanta_ga_december_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4374207/normal_60497d176e404.pdf
    • http://instacopyrighthelpteam.com/18829582578z9wey.pdf
    • https://static.s123-cdn-static.com/uploads/4382408/normal_5ff90a4f483c6.pdf
    • http://byseles.xyz/40449128094pztv.pdf
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fd63a343d63b.pdf
    • https://cdn.sqhk.co/novozefox/f1Ihc1F/star_wars_kotor_2_android_apk.pdf
    • https://cdn.sqhk.co/lavopizusasu/ax7VcCb/struckd_3d_game_creator_download_uptodown.pdf
    • http://bitjoms.xyz/zipivenufodogemuvakagik9e0a.pdf
    • https://cdn.sqhk.co/rorezina/aYH6hjf/download_game_dawn_of_steel_mod.pdf
    • https://static.s123-cdn-static.com/uploads/4449000/normal_5fee458dc92d2.pdf
    • http://vashe-zdorovie.xyz/steve_jobs_the_man_who_thought_different_free_downloadrw7y5.pdf
    • https://cdn-cms.f-static.net/uploads/4393890/normal_6012b170561f7.pdf
    • http://afracheat8.xyz/captive_gendersmyewm.pdf
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/tilobirodabiw_nosadefa.pdf
    • https://fanazogi.weebly.com/uploads/1/3/0/9/130969494/varafuveb_busekum.pdf
    • http://lifolibi.sportsontheweb.net/vikipuxixegiloxajob.pdf
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5fd63b5802cc8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rosevasejila.myartsonline.com/charmglow_grill_parts_near_me.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_off0000de1f.bin
80c82b145b2dcaf35a078b2e952779b6c9641d0f4a647a68dcbc1ce22c3fb70d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1F 5996 bytes
font_01_sfnt_off0000f1e7.bin
0be8c1a11ba3f41af604ccaf05f4fcf8fcd5d323b5a63126fef8bbc297ae12c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E7 10952 bytes

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