Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfc9301bf05d73c…

MALICIOUS

PDF

254.4 KB Created: 2021-03-09 01:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2f3a0653a862069c0e7edc5f7414d9b0 SHA-1: 4739f9dec0ed1a77bd6fcee0d83b0f9fd253113e SHA-256: 7dfc9301bf05d73c1796af579ab16fe6ced6cdf110db7371e3302b68853e37a0
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick users into downloading further malicious content or visiting a phishing page. The document body, though heavily obfuscated, suggests a lure related to file conversion, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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://druttle.ru/award?keyword=file+conversion+pdf+to+word+online+free PDF link annotation
    • https://cdn.sqhk.co/jenireni/hgifPij/juvaluralonuzexadawa.pdfIn PDF document text
    • https://cdn.sqhk.co/roxirali/jhzhbhf/best_free_android_brightness_dimmer_app.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/bhcWshh/telecharger_web_for_instagram_direct_dm.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/belabaj.pdfIn PDF document text
    • http://zusiwibewire.mypressonline.com/bebasolarudese.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/how_to_use_a_simple_sewing_machine.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/Xfyyghj/23347043086.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450732/normal_5fffd2eaf0aa5.pdfIn PDF document text
    • http://werikipirojenob.scienceontheweb.net/foxokadoripuwagutubov.pdfIn PDF document text
    • http://vurejowug.mypressonline.com/blackstar_id_core_stereo_100_guitar_combo_amp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486346/normal_60108f233bc4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478716/normal_5fff54e793aa0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_740baecd4ec94ae99f43f01a6afb5e53.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a830f2a-12df-4628-8c8b-3fe4b3451ff0/how_to_clean_coffee_keurig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd24ce9e-0b83-4b39-a8c2-807cc86c70c7/zezoguwoposerujutek.pdfIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_4f5bae9d09014e478fd76e86a815ea6b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6302b45f-1d2c-447c-9e08-8fb1b5a40a74/77091103019.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/37604117777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab65dad-7b7b-407e-be28-d8c931b7fe89/what_does_444_number_mean.pdfIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_db326cbeb3c340b0853597e04f7739c2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/840b1c7b-f5ec-42d8-8715-d17dcbb829c1/is_regions_customer_service_open_on_saturday.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/the_road_chip_full_movie_online_free.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003b1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B1B3 5044 bytes
SHA-256: 6d64cb3c800113960dcb878944e17ebfd23525af6e573cb9e4799f617a10e7ab
font_01_sfnt_off0003c30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C30A 11780 bytes
SHA-256: 073f79563837ba73ec71bb9e7bf12e34d1bfa3a82204a8ffd7a3e4d1ff8d1179

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