Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e76d789318c9b2a…

MALICIOUS

PDF

89.5 KB Created: 2021-06-07 07:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8aebe659bac78c0b53c6e90d4a64b62 SHA-1: 94cf3093b32bea71db5e7f2b0bdfc494362348b9 SHA-256: 9e76d789318c9b2a22ac15122c7efd3d6853313da42ff8146e7c1907d8abe34e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the presence of a download button lure and a callback phishing lure, suggesting an attempt to trick the user into executing a payload. The embedded URL points to a suspicious domain, likely hosting the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://crysiq.ru/pbw?utm_term=most+romantic+urdu+novel+pdf+download
    • https://cdn-cms.f-static.net/uploads/4450242/normal_5fd2a774549fd.pdf
    • https://cdn-cms.f-static.net/uploads/4414173/normal_60b86bcf380d0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/97d0dac6-3162-4a72-b5d6-e6a09d987489/craftsman_10_inch_miter_saw_unlock.pdf
    • https://uploads.strikinglycdn.com/files/cf36bdd7-9966-4b7a-941a-f138231d0425/software_testing_course_fees_in_pune.pdf
    • http://namikikis.pbworks.com/w/file/fetch/144752367/72585925107.pdf
    • http://bofamawetodo.pbworks.com/w/file/fetch/144634416/comprehension_passage_for_class_7_icse_with_questions.pdf
    • http://movovepavuzi.pbworks.com/f/armenian_alphabet_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/4c4c786f-f557-4319-b7a2-91b67eacb7b6/53929137508.pdf
    • https://uploads.strikinglycdn.com/files/aa60610b-60bc-4476-9d46-0263af22e9f5/ap_ssc_marks_list_duplicate_memo_2013.pdf
    • https://uploads.strikinglycdn.com/files/11b79d0a-7d94-405d-bb02-cbce2fa23f05/what_to_read_before_the_dark_tower.pdf
    • https://uploads.strikinglycdn.com/files/5608ffc9-4b25-4893-b7db-2c24fd8b0e96/welding_guide_for_beginners.pdf
    • https://uploads.strikinglycdn.com/files/d02f92fb-ffdb-4d4d-addc-ad65b39e5012/51292251975.pdf
    • https://uploads.strikinglycdn.com/files/feca6b32-7a94-465f-ba65-44f7bd914a8c/meeting_sign_in_sheet_templates.pdf
    • http://giwupiraride.pbworks.com/w/file/fetch/144624627/bronx_county_clerk_divorce_records.pdf
    • https://uploads.strikinglycdn.com/files/47880794-9858-4522-9b56-8f363ef1b2a4/98010544745.pdf
    • https://uploads.strikinglycdn.com/files/fef82896-69ff-4466-8951-f984db05670f/15545262543.pdf
    • https://uploads.strikinglycdn.com/files/162ea9ef-3cda-4a31-a95c-a090d7eb1806/how_to_use_interlocking_bricks.pdf
    • https://uploads.strikinglycdn.com/files/cbbad381-96f1-4ee8-a4dd-08f07192fcfe/windows_10_ebook_free_download.pdf
    • https://uploads.strikinglycdn.com/files/da30694e-c2a5-4915-86ff-9798ab8bcc73/is_usps_shipping_internationally_right_now.pdf
    • https://uploads.strikinglycdn.com/files/b0cfb208-937d-44a3-83ce-61e09e93a8c1/frosty_the_snowman_movie_where_to_watch.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_off00010150.bin
00519bd6b972d2c903886472480b801a4fa7feba9a565bdfb65a269829ff748d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10150 5456 bytes
font_01_sfnt_off000113e8.bin
ac1272539cf48a0dc15721fc7e5a37c1c7a46e54972e958c3c485a429cec41ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 10892 bytes
font_02_sfnt_off00013942.bin
7778980a037ede07a3192e1a4d9f4e2b7bff259edd1b16ef5fbc18da15a623dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13942 19588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.