Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64e9fbddc3fc0a3…

MALICIOUS

PDF

79.2 KB Created: 2021-03-15 23:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 155d1c5c7937acbbc8aa627dcc276fe9 SHA-1: 28d44300c22844541dab8330f79a39c9c13fc535 SHA-256: b64e9fbddc3fc0a309da23cba077f9691e696083844515591fe320e0d8c5b510
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a lure to download software, which is a common tactic for phishing or distributing malware. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which could be used to exploit vulnerabilities or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/award?keyword=convert+pdf+to+word+software+download+freeware
    • https://cdn.sqhk.co/dijogiper/c8fHgh4/swipe_brick_breaker_the_blast_level_324.pdf
    • https://xumebarukez.weebly.com/uploads/1/3/4/6/134687090/sojoxi-mugilolop-kazubuv.pdf
    • http://taxevidel.medianewsonline.com/marantz_sr5007_review_what_hi_fi.pdf
    • https://nimidakotogala.weebly.com/uploads/1/3/0/8/130874585/3f258a48f79b.pdf
    • http://bodaweziwov.mypressonline.com/gixipufafuralo.pdf
    • http://vowazokisexe.22web.org/tirefusojozisepikegoju.pdf
    • http://dasukegejiwav.iblogger.org/13615779468.pdf
    • http://taforojujutusig.mygamesonline.org/fakufenato.pdf
    • http://gadazagowuvared.iblogger.org/wevedosorefotewiz.pdf
    • https://cdn.sqhk.co/kixarozikej/Z9hhgis/donozuvukivotoder.pdf
    • https://powedumino.weebly.com/uploads/1/3/4/3/134350182/domakukufokofufe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zorijefugixor.atwebpages.com/can_you_make_tapioca_pudding_with_buttermilk.pdf
    • http://ritajexebezix.epizy.com/bottega_del_caffe_goldoni.pdf
    • https://s3.amazonaws.com/xugigabitulu/bamasinusuwedaserudivox.pdf
    • http://figofubinodafe.rf.gd/tarije.pdf
    • http://pojetol.epizy.com/unqualified_audit_report_example.pdf
    • http://juxugalipexobow.epizy.com/niwobagaxoxivepolovotuf.pdf
    • https://s3.amazonaws.com/busutafitufe/sd_citybeat_voter_guide.pdf
    • http://xukiwelufa.epizy.com/rurotowifip.pdf
    • https://s3.amazonaws.com/gupojakami/prentice_hall_literature_timeless_voices_timeless_themes_slader.pdf
    • http://sofidusujewa.epizy.com/83330983569.pdf
    • http://megigezorozo.atwebpages.com/93548349226.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_off0000fa34.bin
c152f9cdd1471e6f13559219fb41c61af2820ea9cffbafee4a1a8c3b44fe09e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA34 5092 bytes
font_01_sfnt_off00010bab.bin
a7e7235eeb152c5c8b612875adaf4a80e0fe0395f1a83e7dd61bfc35b62d11ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAB 10332 bytes

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