Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec82a4143ec739a…

MALICIOUS

PDF

110.5 KB Created: 2021-04-06 13:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b12bf56deddfc48888d0e9fa91bbfb36 SHA-1: 4c93a921b54b68d551cd5c12cf47e1d71788c27b SHA-256: 1ec82a4143ec739aa98c7f34435dcd865d0aa0db9e123b2a5e7a5b0ce750a0c7
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used to redirect users to malicious sites. The document body, though heavily obfuscated, suggests a lure related to movie series, further supporting a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/strik?utm_term=alex+cross+series+in+order+movies PDF link annotation
    • http://trixy-matrix.space/the_holy_quran_english_translation_by_maulana_muhammad_ali8kx2e.pdfIn PDF document text
    • http://presente-top.store/goat_simulator_payday_trophiesaltw3.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://burivuvuju.medianewsonline.com/solitaire_board_game_rules.pdfIn PDF document text
    • http://kefijor.mygamesonline.org/28590058566.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/constitucion_poltica_estados_unidos_mexicanos_1857.pdfIn PDF document text
    • http://acgmgroup.ru/age_of_empires_2_mac_megaol38f.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/jifuHHe/how_long_was_oscar_the_grouch_orange.pdfIn PDF document text
    • http://fly-drive.online/878695704399v2n4.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/gchcigz/daily_deals_amazon_canada_2019.pdfIn PDF document text
    • http://ita-bio.space/win_worley_binding_and_loosing_prayers1ucg3.pdfIn PDF document text
    • http://fiwetud.scienceontheweb.net/69721282906.pdfIn PDF document text
    • http://3gusevshop.website/zamiwisisolawonewhpl.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/hgbEjge/nojipasorinu.pdfIn PDF document text
    • http://konsalting.info/rijose6oxjk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aedbde9-d17f-488f-8ddc-90c82ad29364/intercessory_prayer_scriptures_for_healing.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/jcenter_cebu_movie_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf8c40d-e19a-4236-b03d-42772ee2ec64/how_to_get_jersey_mikes_delivered.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b94679a5-2289-4287-8cef-1e25b7062313/how_to_clean_sunbeam_humidifier_model_sul495.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/24458889043.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/98699350635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eae5201-0a0f-42c1-9d56-a52f09793ef6/how_to_connect_coby_digital_converter_box.pdfIn PDF document text
    • http://biburusig.myartsonline.com/prepositional_phrases_list_with_meaning.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_off000173c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173C2 4992 bytes
SHA-256: 77ed398c4b547aa457ebb0047150c9ddaa73c3149312fbe9c69b7e484023aece
font_01_sfnt_off000184ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184AD 11816 bytes
SHA-256: e19e8c1974ffda6983726e453f6a8258d8aa73dbfe15eec6913946dbea1d0992

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