Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6df12c44dd8a304…

MALICIOUS

PDF

87.9 KB Created: 2021-03-17 23:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a0bd8619136fb010eea444a7aca0ca7 SHA-1: b64730e4e8ac1bd1787a2735b4bd3e3baf69cb78 SHA-256: a6df12c44dd8a30447dc2e5605a5de59d234fb3b2582682e5f4619985954f95a
112 Risk Score

Malware Insights

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

The PDF file contains a suspicious external URI pointing to a URL that appears to be a lure for downloading content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to downloading a PDF, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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
  • 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://jacksth.ru/award?keyword=rannar+boi+in+bengali+pdf+free+download
    • http://topstudy.fun/4258962838yggyf.pdf
    • http://bupro.asia/cloud_security_alliance_certification_verificationw8ou5.pdf
    • http://kafidovomiguvo.mywebcommunity.org/xurosakotanapuku.pdf
    • http://lnstgramhelpcopyright.com/933111442355ahlg.pdf
    • https://cdn-cms.f-static.net/uploads/4485939/normal_6047b7eb32a19.pdf
    • http://bullbananavannaone.xyz/agar._io_mod_menu_apkcakmo.pdf
    • http://iuts.space/buripezuwepudogasusd9wbf.pdf
    • https://static.s123-cdn-static.com/uploads/4419441/normal_5fdefb268b079.pdf
    • https://cdn-cms.f-static.net/uploads/4459796/normal_603bdbabdae93.pdf
    • http://fogafiv.mypressonline.com/photoscape.x.pro.v2.4.1.x64__crack.rar.pdf
    • http://xunarepozufuz.mygamesonline.org/can_someone_see_my_browsing_history_from_another_computer.pdf
    • https://cdn-cms.f-static.net/uploads/4455196/normal_6028b2f432c4f.pdf
    • https://cdn.sqhk.co/porosobof/jdjcjgz/66081048261.pdf
    • https://static.s123-cdn-static.com/uploads/4464327/normal_5fe5b0a540f4f.pdf
    • https://cdn.sqhk.co/juvexafi/gg7qjiO/pepopanegijenesovibawomav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gurafoga/woruwanezakap.pdf
    • https://s3.amazonaws.com/pusolefosex/badshah_film_full_song.pdf
    • https://uploads.strikinglycdn.com/files/306a77bc-d113-4323-b33d-59535254b5a5/safety_first_car_seat_forward_facing_install.pdf
    • http://kopurelotalad.onlinewebshop.net/how_to_set_a_honeywell_thermostat_on_auto.pdf
    • https://s3.amazonaws.com/godewumazek/nigugurukiliwedufuvovipin.pdf
    • https://uploads.strikinglycdn.com/files/b52305f6-bc54-4291-99c2-e8e13f5b2fa7/kixulotewamuxaxivefuwi.pdf
    • https://uploads.strikinglycdn.com/files/62dc5ced-9647-4eb0-8dc6-ff2f0ab669a0/how_do_i_cancel_my_enercare_water_heater.pdf
    • https://s3.amazonaws.com/verirejon/siwewinaboxop.pdf
    • https://uploads.strikinglycdn.com/files/5b2323fe-20d3-4ec5-b2b8-b4b49f2d782c/how_to_paint_a_simple_winter_scene.pdf
    • https://uploads.strikinglycdn.com/files/5f26fb06-1793-4cba-bad9-cbfd0e4b3bc9/wifaf.pdf
    • https://s3.amazonaws.com/zalomi/85459672412.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f087.bin
93256793f3fa8411ed7c9bc5b9c545fdbb9505db9d04d39dfb5fbfa925ac964a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF087 5268 bytes
font_01_sfnt_off00010294.bin
b3c0a537a2cfff192a3bf42f1126e8343dfbde8b42b411ab261ac84328678a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10294 13600 bytes
font_02_sfnt_off00012b6e.bin
8fe86d296b1562bac8b015bbda1b6f8207e27c064a8005f182797aa9dc9d7282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B6E 10432 bytes

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