Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b23dbf7e5d4d366…

MALICIOUS

PDF

77.7 KB Created: 2021-02-20 22:49:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 59cc16506a583ef2eec9922c2c1bc2e4 SHA-1: 0c2fc25f3bf3c887888d5e3ce6b84a60455b08eb SHA-256: 1b23dbf7e5d4d3668400be50a904e6ceca36d1451f8ac31462c4d527d3a513a2
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 critical heuristic firing for ClamAV detection. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to search results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/strik?utm_term=electrical+symbol+for+plug+socket PDF link annotation
    • https://cdn.sqhk.co/puroneruk/icigLYe/strategy_pronunciation_audio.pdfIn PDF document text
    • http://prognoz-football.club/laduxetunojesozobuvi3teir.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/mukumoligigemogaluqalvc.pdfIn PDF document text
    • http://onlinetiser.website/bosch_mitre_saw_gcm12sd_manuali1tqc.pdfIn PDF document text
    • http://future-techno.ru/88025494373p2xs3.pdfIn PDF document text
    • https://nobarolibefo.weebly.com/uploads/1/3/1/4/131407117/latifenekisobe.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/fha8jd1/stickman_battle_online_shooter_3d_mod_apk.pdfIn PDF document text
    • https://likudone.weebly.com/uploads/1/3/4/6/134681098/fuvuwonexowaruw-vefijukosu-kokodebun.pdfIn PDF document text
    • http://libralab.digital/copplestone_church_szsy0g.pdfIn PDF document text
    • https://pezibife.weebly.com/uploads/1/3/4/3/134376528/17354.pdfIn PDF document text
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/ec15a628.pdfIn PDF document text
    • http://hackins.site/forex_swing_trading_manual44v4y.pdfIn PDF document text
    • https://xejapekedom.weebly.com/uploads/1/3/4/8/134864907/merujeme_worojedowuguwi_sonabepogul_xakarunaparawat.pdfIn PDF document text
    • https://nelotimef.weebly.com/uploads/1/3/2/7/132740277/3192467.pdfIn PDF document text
    • http://varietystore.website/7164530988960hv8.pdfIn PDF document text
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/fomukogigibutigazij.pdfIn PDF document text
    • http://forkidsshop.online/slope_unblocked_google_sitesi14ia.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/bejulisogek_kawenobaw_japike.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/levovod/baseball_uniform_designer_nike.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/adobe_photoshop_cc_app.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/tezewanopotebajodor.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/how_to_learn_english_for_beginners_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE557 5376 bytes
SHA-256: 48fbe5444bce21aa86968056b4cde2c778603eedab77497fde391a4900d59653
font_01_sfnt_off0000f7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AC 10348 bytes
SHA-256: 00be0098e7ab88f2206615e1997ff6b4d43833d4a808038fd45436144909ca06
font_02_sfnt_off00011af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF4 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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