Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1c1153fb17e723…

MALICIOUS

PDF

79.7 KB Created: 2021-03-13 22:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 222ab1149af5ec8989b894b8798b680c SHA-1: dabe05b5a845e33eafa9a276d3976eabaa90d31c SHA-256: ac1c1153fb17e7237be66164dfef4841117e99f35fbc635620efe70aba38077c
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains embedded URLs, one of which, 'https://leonvi.ru/wix?keyword=age+of+zombies+season+2+mod+apk', appears to be a lure for a modded application. The presence of a visual download button further supports a phishing or social engineering attack vector. No scripts were extracted, but the embedded URLs suggest a download or redirection to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/wix?keyword=age+of+zombies+season+2+mod+apk
    • http://dogalijun.scienceontheweb.net/love_poems_for_husbands_from_wives.pdf
    • http://kindraretterath.com/najifivapelezitazufowone86sr5.pdf
    • http://wapividazofar.scienceontheweb.net/arab_times_newspaper.pdf
    • http://naturebiolog.fun/48641646292dmum2.pdf
    • https://leduzurukidep.weebly.com/uploads/1/3/4/8/134858842/66a4d81.pdf
    • http://netewe9.xyz/do_baby_grand_pianos_lose_valuem5qqn.pdf
    • https://zawevujavesid.weebly.com/uploads/1/3/2/8/132814930/mesuzav.pdf
    • http://reetodo.online/tarot_cards_rider_waite_ebay3ksfr.pdf
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/a85f257cdf.pdf
    • http://matcobzor.ru/8994992483140uya.pdf
    • https://lidovoji.weebly.com/uploads/1/3/4/3/134313359/5441737.pdf
    • http://socialwave.me/gagurolitesifupatazi8za32.pdf
    • https://bokuwiziwa.weebly.com/uploads/1/3/4/0/134042705/ee18ddf0bf8.pdf
    • http://cashtanks.fun/46875870897dam07.pdf
    • http://logvoz.ru/rudolatedutopujo1321u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/doxifuba/57687943785.pdf
    • https://s3.amazonaws.com/zusevamasor/18988934826.pdf
    • https://uploads.strikinglycdn.com/files/9352b264-ef83-478c-af62-4ffa8cc85021/77861617846.pdf
    • https://uploads.strikinglycdn.com/files/31bc588e-6abe-417b-87a2-36f7cc5fa651/19111572058.pdf
    • https://s3.amazonaws.com/kegubinefuda/vifakiwi.pdf
    • https://s3.amazonaws.com/gimufesajo/42597534921.pdf
    • https://s3.amazonaws.com/wovigebi/fivugadizivexowoxizoj.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0c5.bin
c14c70fd79cbfcae2a9c2c380dd5e100293d3ba07f561b813f8d17314705b021		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C5 5608 bytes
font_01_sfnt_off0000f3df.bin
ab72668c33192957e518435b80e64345bad5b6a8c1dabb2d788c1e472c4185e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DF 10772 bytes
font_02_sfnt_off00011920.bin
93820fcf0c36f7019f536747ee5d9ce3cdd25ed62ecebc674f213bfc693f3252		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11920 16908 bytes

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