Malicious PDF — malware analysis report

Static analysis result for SHA-256 add68aecafbb278f…

MALICIOUS

PDF

96.2 KB Created: 2021-05-18 16:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9e1206bd0c29558df0ccf1a76ff48c7f SHA-1: a7fc4fa0283e3e9956fe174110b52f90c754897b SHA-256: add68aecafbb278f36e3967ef9e12a02ef9e4436ab4c738311e543b7efcef39a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with a high probability of being malicious. The document body, though partially corrupted, suggests a lure related to 'Bets to do with your crush', likely intended to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/strik?utm_term=bets+to+do+with+your+crush PDF link annotation
    • http://potajin.iblogger.org/tekatiterituberul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446158/normal_60277bf45519c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527042/normal_600a8a990bf12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_60178ad616f18.pdfIn PDF document text
    • http://dapodulasopo.iblogger.org/misunodavetezuj.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/piwupevivotixi/nujeti.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/24458692102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/047ec6e6-6768-47e5-b7d1-8baf51b17f55/schwinn_exercise_bike_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/free_online_movies_twilight_new_moon.pdfIn PDF document text
    • http://zifasodokid.epizy.com/vujenitozes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5874e1f-8573-4136-8834-1a5ed393bd3b/how_to_write_a_macro_in_excel_2010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc23bc5-3125-400b-a879-6ff4df94c4b9/paracord_critters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b52ab0b3-2bbf-424f-8672-8b6bd22d0175/tofurezixezelomux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad3ec009-7999-488f-856d-5cc1e0b1a31b/ruvuwujemijosuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26083642-de4b-4df7-b91f-cadb1c90a5a6/24066580261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/967e88b4-fa6a-4408-b57c-7ff506ea21d4/python_for_loop_list_assignment_index_out_of_range.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c68e5f-4324-4d06-8926-20d4bb6d1005/apk_de_minecraft_pe_1.13_0.1.pdfIn PDF document text
    • http://gagokirabi.rf.gd/munivunukiwitotukujozox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c21b5f59-6fbb-49d9-9cf6-7af58bc55f68/97710862016.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE74 6416 bytes
SHA-256: 528d1e79c27aec131c2cbf846536b85f4c117e3725d0fa982f5a85159cdab222
font_01_sfnt_off0000fe46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE46 5028 bytes
SHA-256: bf21301e4c485e243784c1d34fa355a2c83731bb2bc7087f1fe156edfb654e49
font_02_sfnt_off00010f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6D 9628 bytes
SHA-256: b98ea717a759b49a1a6675d5ee6d7dd42750cdbbd03ad316dfa810edbacacb94
font_03_sfnt_off00012e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E50 10936 bytes
SHA-256: c8c3b6fa6cfca40fd6a2821edcd6809ca7b1dcb7a7e4ac4a1aeaab6c4d71f5cd
font_04_sfnt_off00015399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15399 16256 bytes
SHA-256: 8cc6bcc2cf3defe0a88aedbd81e1c3d6ddceaf294630c8a268e5b6d92b2eedfb
font_05_sfnt_off000168f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168F6 1740 bytes
SHA-256: c3083234ffb6d861bab5d39791d58a5de51bcb1f3d85f264bb0581569c330447

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