Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b5c3c0840cc237…

MALICIOUS

PDF

87.0 KB Created: 2021-03-17 01:21:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 141664ad4f3e01aec317a1adc26b428b SHA-1: 06061fd4735b790e394789d74617b14aa9950d91 SHA-256: f1b5c3c0840cc237da35cb7b5dba16751076114ac8bf193ae642a96107ec2acd
104 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'free gold clash of kings' and an embedded URI pointing to a suspicious domain, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lure indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nipisod.ru/wix?keyword=free+gold+clash+of+kings PDF link annotation
    • http://prechambre.xyz/876240505202evcx.pdfIn PDF document text
    • http://civiliscmq.online/how_to_talk_to_anyone_with_confidencesaw2c.pdfIn PDF document text
    • http://iclod.tech/longman_dictionary_download_freehigk0.pdfIn PDF document text
    • http://excellent-spb.ru/the_practice_of_statisticsanpr8.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/Qijhbib/bumofisukavamojokurogim.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/dhb7Zhj/why_did_the_chicken_cross_the_road_meme.pdfIn PDF document text
    • http://tb-films.ru/wurebipikawfxjec.pdfIn PDF document text
    • https://cdn.sqhk.co/xajegakagiz/fDvcohj/atomic_command_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nisoxow/brawl_stars_hack_apk_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/android_textview_onclick_change_background.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/the_end_of_the_world_skeeter_davis_in_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0171528-7f30-412b-b15a-4be04f0589ae/asus_crosshair_iv_formula_ethernet_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/farabedawefete.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/abhinetri_2_movie_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/38907303794.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/natavoxawijaliz.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/algebra_worksheets_gcse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbc1714-a6e5-480c-851a-1d41dac91dff/troy_bilt_2700_psi_2.3_gpm_gas_pressure_washer_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94aba4cc-f5c7-43a3-819f-2e33d179aa6c/xobonitegotin.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF449 5304 bytes
SHA-256: 3b58e72a320f12de2e7dff971f77787c5e57c59467b1149c7cc7ea1ec5bc5196
font_01_sfnt_off00010650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10650 22264 bytes
SHA-256: 99a89ef45d7e326e632feeccdce5f2bd5875f8557d2a3c32bdb463a2a14e13ff
font_02_sfnt_off00013823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13823 16160 bytes
SHA-256: b91ebbfc40a94f10b2fcfc4d08542e4cd4fc38dcff43bcfefe5d572695fcce17

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