Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c89ee6c789a993…

MALICIOUS

PDF

88.9 KB Created: 2021-03-11 12:38:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c60aeca78d4f1c31ba43f01deb523c30 SHA-1: ea3b67939a2bf8ef214e61e8f2b202ab866f862b SHA-256: 01c89ee6c789a993b85ee90173ebd84dc2eb6dc20c3281f8a52cb61e74d53ffe
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with a primary one pointing to a suspicious domain that appears to be a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/wix?keyword=fisher+price+papasan+cradle+swing+weight+limit PDF link annotation
    • http://heliusdesign.ru/cara_membuat_barcode_dari_google_formcjc7e.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/75360805175.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/bjgggjj/13439057899.pdfIn PDF document text
    • https://cdn.sqhk.co/dibidoretu/bgeghbl/66109670720.pdfIn PDF document text
    • http://lesuxofozadize.mygamesonline.org/45765148693.pdfIn PDF document text
    • http://zofunubesosena.mypressonline.com/lowiz.pdfIn PDF document text
    • http://meblik.su/ncl3_bond_angleyow47.pdfIn PDF document text
    • http://fulukegoror.getenjoyment.net/virowojuliker.pdfIn PDF document text
    • http://vazewuxu.mywebcommunity.org/what_would_cause_a_jeep_not_to_start.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/how_to_recharge_car_battery_with_charger.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/o35hc1Y/xizigofasenowofuji.pdfIn PDF document text
    • http://nodefiw.medianewsonline.com/bat_boy_the_musical_script.pdfIn PDF document text
    • http://detonic-italia.website/is_a_discovery_of_witches_season_2_on_netflix11y2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/46274670876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/094afb0b-da1e-495e-92ba-d395aec5be91/how_to_stop_sensor_light.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/simone_de_beauvoir_trke.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/aspen_university_masters_in_nursing_informatics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce7449f-340b-4a5b-b3b8-dbd795faf0a4/powuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/shola_aur_shabnam_film_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/zexiledudedemigazaguxiw.pdfIn PDF document text
    • http://gogujigasad.onlinewebshop.net/17244707428.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_off00011f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F68 5532 bytes
SHA-256: e8d460988cbfd91eb27eca3665396993ccbcd684c7c1a832810fe4b29acb74f6
font_01_sfnt_off00013226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13226 10684 bytes
SHA-256: 15a334f3bbfb272e0ee9047b0825db6c89f0c05bae2fb9b76cbf94b0e4e713df

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