Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e612ab89e08df17…

MALICIOUS

PDF

77.5 KB Created: 2021-03-11 05:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7643247d8af7acbaff2218df98e69e7a SHA-1: e5f80de35865adda67339c93db982a53f8ddbc8b SHA-256: 8e612ab89e08df1736ce04018c07ae0c03eb8db716158ee1c4043f8fde933f72
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to 'intensitas medan listrik pdf'. The presence of an external URI points towards a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/award?keyword=intensitas+medan+listrik+pdf
    • http://bebobez.22web.org/43357325149.pdf
    • http://lawexape.mygamesonline.org/what_are_the_basic_macrame_knots.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kedaxesipuwid.epizy.com/13426132526.pdf
    • http://zatojigetafugud.epizy.com/china_visa_application_form_malaysia_fees.pdf
    • https://s3.amazonaws.com/fajonubinomeder/business_finance_template_excel.pdf
    • http://gifojakuwijipiv.rf.gd/harbor_breeze_beach_creek_led_ceiling_fan_remote_not_working.pdf
    • https://uploads.strikinglycdn.com/files/0e84a061-54c7-4721-a132-94245d25ef9d/29028199796.pdf
    • http://japinoxizidunub.myartsonline.com/lepiwaviwejudujedutumak.pdf
    • https://uploads.strikinglycdn.com/files/06478cde-83d5-4ad8-aabe-afb6168bc77d/326956286.pdf
    • https://s3.amazonaws.com/rodakarugupoko/36647351965.pdf
    • http://guzupuxidulijak.rf.gd/4487236591.pdf
    • https://s3.amazonaws.com/woneketelak/bar_soap_under_sheets_for_leg_cramps.pdf
    • http://lesuzikabe.epizy.com/hp_8620_printhead_buy.pdf
    • https://s3.amazonaws.com/wuxupewu/template_expense_report_excel.pdf
    • https://uploads.strikinglycdn.com/files/decf8ed9-5066-4317-8943-f9bf98210f34/loranobon.pdf
    • https://uploads.strikinglycdn.com/files/c72710b4-f7ef-4e3f-afea-c0f776b3589e/64425343543.pdf
    • https://uploads.strikinglycdn.com/files/485fab3f-73b7-42cc-abc8-1e2394f7de23/aroma_10_cup_rice_cooker_and_steamer.pdf
    • https://uploads.strikinglycdn.com/files/9239c0a1-4888-431b-9f92-4526fb87b44e/ledafujome.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_off0000e968.bin
119a870165a173a028fa0d2cba06bdab8a5a624f7bcd28180ef345da3dfb8877
pdf-font-stream PDF embedded font (sfnt) at offset 0xE968 1864 bytes
font_01_sfnt_off0000f256.bin
db0ea79b0320b9234b93a9ecce569e8c0fd7375fec9a965abf4e29d617987c18
pdf-font-stream PDF embedded font (sfnt) at offset 0xF256 5188 bytes
font_02_sfnt_off000103e3.bin
bf71ced62d072e30cbaf057ab4e29b6e4f46687f6d9f7ecbf39cc92a1cdc72fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 10680 bytes