Malicious PDF — malware analysis report

Static analysis result for SHA-256 95fa3a7ff5d0de16…

MALICIOUS

PDF

83.6 KB Created: 2021-05-02 19:55:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71791d9a956a40045ed8c51219ad1562 SHA-1: bb283557d594a6618e2a00810d7cddb99d83fbac SHA-256: 95fa3a7ff5d0de16b035c3d0b3c354233af81df4944bcd8b8c6ded9712b7e761
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, contains text related to search queries, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://seumenha.ru/strik?utm_term=tecumseh+small+engine+carburetor+rebuild+kit
    • https://cdn.sqhk.co/devisofage/gcjh9hb/31398114382.pdf
    • http://presente-top.store/the_hunger_games_2014_full_movie_in_hindi_dubbed_download_720pj7x5x.pdf
    • https://cdn.sqhk.co/vidoperife/hcIsAvp/keriforer.pdf
    • https://cdn.sqhk.co/pefisemise/pjeSXhc/clockwise_md_covid.pdf
    • https://cdn.sqhk.co/wapuwozelob/fKgfohh/hell_divers_book_2.pdf
    • http://openlait.pro/36_kitchenaid_cooktop_with_grillkvur8.pdf
    • https://cdn.sqhk.co/pimidima/ia4bYhe/babylist_welcome_box_february_2020.pdf
    • http://clebohets.xyz/230215598225kfpk.pdf
    • http://sportplays.ru/bar_training_course_2021s7n81.pdf
    • http://help-service-support.com/lunovadotifedumutk2i8m.pdf
    • http://janarofovuw.22web.org/zafeduradilifuzipojug.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wipezusefoxilu.rf.gd/28213424300.pdf
    • https://s3.amazonaws.com/sedowedi/wiveridosurovidusofo.pdf
    • https://s3.amazonaws.com/rokuwapesu/fijilavibetamaxoxuk.pdf
    • https://s3.amazonaws.com/boxalewijim/the_chocolate_war.pdf
    • https://s3.amazonaws.com/feborobegibew/zepewibozagejiti.pdf
    • https://uploads.strikinglycdn.com/files/8b2b837d-ae5a-4ccf-87a9-853fb7ed68d6/do_front_load_washers_have_mildew_problems.pdf
    • https://uploads.strikinglycdn.com/files/5480e6ef-d605-4b40-b8cd-c5f4882d1ed5/xepupiwetabojis.pdf
    • https://s3.amazonaws.com/nakuzafol/biravuxurek.pdf
    • https://s3.amazonaws.com/xafaxotaful/49483863940.pdf
    • https://s3.amazonaws.com/dabatisew/budgeting_books.pdf
    • http://lapefub.epizy.com/70389689389.pdf
    • https://uploads.strikinglycdn.com/files/ec2ac186-99db-4f7d-9607-a5f156b240ae/first_grade_homework_free.pdf
    • http://wirodugapilab.epizy.com/rinowamizubasajemef.pdf
    • https://uploads.strikinglycdn.com/files/80efddf3-ef5a-4d81-bc8d-757d185dc251/gafizujovo.pdf
    • https://s3.amazonaws.com/votawawo/64436343348.pdf
    • http://nejetetivapane.epizy.com/breakdown_of_charges_template.pdf
    • https://s3.amazonaws.com/borokegujuzero/sorede.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fadd.bin
119687e316de8dad50b5bdabdafd082e0f6decb23429526fe929b4a886f0ab6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFADD 5388 bytes
font_01_sfnt_off00010cfb.bin
9d920311f9fc3c47239e0835996d6d6cce5da02276a4865eb9bc86061a9ffd57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFB 11000 bytes
font_02_sfnt_off0001326f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1326F 4324 bytes

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