Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ce76b7dc4d6c3e…

MALICIOUS

PDF

82.2 KB Created: 2021-03-21 07:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 866a6acd3f446a6c8f5825f8215fd36e SHA-1: 94d2be5e165db1f46570c6cfb20a0553b22ffd59 SHA-256: 02ce76b7dc4d6c3e2a241d0f113abc9958fd9512fa350613ae12b64ce19b7f62
126 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with one pointing to 'jumiwimov.ru', suggesting it acts as a link farm to distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/wix?keyword=pills+and+potions+lyrics PDF link annotation
    • http://xaxifibipebux.iblogger.org/nopaserefuvodem.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/tasikifitimubupaz.pdfIn PDF document text
    • https://fujareke.weebly.com/uploads/1/3/5/3/135391043/81f203e2fe2ed80.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/modal_verb_definition.pdfIn PDF document text
    • https://gapepaweduli.weebly.com/uploads/1/3/5/4/135400658/mumupafekab_rixotepirak.pdfIn PDF document text
    • https://pabifiliponisod.weebly.com/uploads/1/3/4/3/134367040/a7423561476aea.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/how_to_connect_jabra_bluetooth_headset_to_cisco_phone.pdfIn PDF document text
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/welamam-feferokoponi-tovexuv.pdfIn PDF document text
    • http://liberum.sportsontheweb.net/10234748104.pdfIn PDF document text
    • https://gabejudunutulan.weebly.com/uploads/1/3/4/8/134887900/6052361.pdfIn PDF document text
    • https://zuzesewijolane.weebly.com/uploads/1/3/1/4/131406438/4610761.pdfIn PDF document text
    • http://gadatoreneperil.mygamesonline.org/rocket_propulsion_by_ramamurthy_download.pdfIn PDF document text
    • https://xadatazibinul.weebly.com/uploads/1/3/1/4/131483053/xujizasu-dujokoxunuvil-desaf-savale.pdfIn PDF document text
    • https://mabudorowux.weebly.com/uploads/1/3/4/4/134458492/wetavavewuwogeforo.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://uploads.strikinglycdn.com/files/7541dbf2-be2e-4c9e-bd7f-d8463c9fa20f/2928559385.pdfIn PDF document text
    • http://xerekexaxo.epizy.com/35813232444.pdfIn PDF document text
    • http://mowumurukilada.rf.gd/woxokijepubusil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46da0a1f-7d66-4454-8c5f-9b85c73320b5/pojazifebejaxumefapixowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90e1ec25-2ee8-4d30-af64-69030540e63e/hp_5550_printer_cartridges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8aed2a-02ab-4ffb-92a1-fb15dfd9f8a9/what_time_era_was_pride_and_prejudice_set_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788ea2db-9b03-42f8-833e-c4a2c626a694/what_is_food_safety_and_its_importance.pdfIn PDF document text
    • http://xotaferuju.myartsonline.com/calendario_escolar_2020_tucuman.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_off0000f865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 4840 bytes
SHA-256: 585075a71deb6ac3e02b92eb2376a41832bbf2e4e6bec982935802e137a71376
font_01_sfnt_off000108cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CF 10860 bytes
SHA-256: ff242193bd063884ba017633ae610415e5e73141bf5d3609f3c9a4e7f1bfb070
font_02_sfnt_off00012e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E08 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176