Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb325287bf75f84…

MALICIOUS

PDF

76.3 KB Created: 2021-03-17 02:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 313899f35f0eaf5ab24bfd26bb0c2017 SHA-1: db32c8ef4b5d32c022298442804ee1a4c9fe1248 SHA-256: ccb325287bf75f843f0279e0f106135e25badbcf0f8ec238d0cd6ea89813f5bf
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site for credential harvesting or further malware delivery. The document body, though heavily obfuscated, contains references that suggest a lure related to Microsoft MCSA BI reporting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=microsoft+mcsa+bi+reporting PDF link annotation
    • http://miromawetibikew.mywebcommunity.org/can_a_google_voice_number_be_traced_by_police.pdfIn PDF document text
    • http://baliferifopiz.mypressonline.com/lg_washing_machine_top_load_filter_cleaning.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/how_do_i_fix_the_pick_motor_stalled_on_my_hp_8600.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/how_to_turn_up_rheem_tankless_water_heater.pdfIn PDF document text
    • http://jisetatiloro.scienceontheweb.net/numugivuba.pdfIn PDF document text
    • http://tozaworewinox.mywebcommunity.org/ponuwutuni.pdfIn PDF document text
    • http://nibewubixela.getenjoyment.net/bufub.pdfIn PDF document text
    • http://siwupezomejen.getenjoyment.net/ropuvuxipimakixetimu.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/sovelewojopufiz.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/31560986522.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
    • http://rixibedi.onlinewebshop.net/8480881406.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/half_ironman_training_plan_16_weeks.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/descartes_meditations_1__2_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/argumentation_schemes_for_presumptive_reasoning.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/metformin_1000_mg_po_bid.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/vufuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/39410648911.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/representation_and_the_media_by_stuart_hall_-_part_2.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_off0000e19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19B 5236 bytes
SHA-256: a2f1118fcbe6cb99c1500b3813e629cb1d68ad0b2449db0cb9e256631a86e0b1
font_01_sfnt_off0000f349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF349 10216 bytes
SHA-256: d2bafe18697136bb801598ca8091dc23940f680b591aedf16e61b88953696019
font_02_sfnt_off0001160b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1160B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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