Malicious PDF — malware analysis report

Static analysis result for SHA-256 55874453c495f784…

MALICIOUS

PDF

86.0 KB Created: 2021-04-03 06:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f489fcb496500387d794b187cb33653e SHA-1: a1baade72b61698f8c464aaeae3facccdc86d644 SHA-256: 55874453c495f784ac7d641b52dade30144f05b44a9d1a39ffe8ca8f3f58070c
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'case study analysis report'. No scripts were extracted, but the presence of external URLs and the overall detection profile strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=example+of+case+study+analysis+report+pdf PDF link annotation
    • http://sell-toclick.online/18886736826dc10y.pdfIn PDF document text
    • http://juraxoxodas.scienceontheweb.net/les_accents_fle.pdfIn PDF document text
    • http://hookup682.site/best_english_learning_app_free_of_coste47gw.pdfIn PDF document text
    • https://cdn.sqhk.co/begokaxawip/hhCZPbp/red_warrior_level_9.pdfIn PDF document text
    • https://cdn.sqhk.co/luzorisu/Qjegigh/western_fps_cowboy_sniper_township.pdfIn PDF document text
    • http://3-bureaureport.info/2020_model_s_review05t1i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fusidejebi/gci_channel_guide_anchorage.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/how_much_is_the_prime_rib_at_boston_market.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/free_coloring_sheets_for_adults_printable.pdfIn PDF document text
    • http://kubowulurarekij.myartsonline.com/jubiduwova.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/how_to_find_cash_basis_net_income.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab147627-87f1-4490-bc79-a4c243a8f799/excel_vba_get_last_row_in_selected_range.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/hp_all_in_one_printer_app.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/how_to_train_your_dragon_series_books_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/47964548584.pdfIn PDF document text
    • http://tikomiwewo.atwebpages.com/cloud_computing_certification_program.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/85230090986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/948f2295-05be-4974-827a-722bf99ab814/which_battery_maintainer_is_best.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/famujebododil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/209cda04-1b59-4d39-914e-3ba19670edec/goxunavilimojurupatazik.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A5 5312 bytes
SHA-256: 377ad4f213b1287f5acf978a1823825050a76b8fd71963c2019b767f0917b501
font_01_sfnt_off000117ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117AD 10768 bytes
SHA-256: 6ebcd4b46ce8513c102ca355337d0a46cf0250e9de1e7e6810ba751785007747
font_02_sfnt_off00013c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8B 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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