Malicious PDF — malware analysis report

Static analysis result for SHA-256 7415aefb4cf7a139…

MALICIOUS

PDF

416.7 KB Created: 2021-03-17 16:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f3b81ed2469ef98bd89b4ae166257db0 SHA-1: be65641efee1d776c6e98d3b21e011cac5453ff7 SHA-256: 7415aefb4cf7a139d92b0486060057076228041d2b3c5ee928166b3be6cdbbd2
116 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a callback phishing lure and a critical ClamAV detection for a phishing trojan. The embedded URL points to a suspicious domain, likely part of the phishing infrastructure. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used in such attacks to redirect users or display malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8298

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/wix?keyword=erick%2527s+fine+woodworking+northridge+ca PDF link annotation
    • https://rekepepijo.weebly.com/uploads/1/3/4/0/134018016/jiwajibuxowara.pdfIn PDF document text
    • https://vazoxavaver.weebly.com/uploads/1/3/4/8/134863882/sojokanawumuwikanine.pdfIn PDF document text
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/nezevumukadelepubed.pdfIn PDF document text
    • http://lodixewovufosa.iblogger.org/greedfall_romance_answers.pdfIn PDF document text
    • https://joruluzadazalit.weebly.com/uploads/1/3/4/6/134673717/notogawafosu-xokazazami-netufekuvida.pdfIn PDF document text
    • https://monogelifanalo.weebly.com/uploads/1/3/5/3/135387447/ad5faa51b.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/zidosozawok/tokifano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17905f3e-80ce-4a99-a039-2d0283b715ce/hp_z420_power_supply_pinout.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/http_remotelink._asus._com_for_pc.pdfIn PDF document text
    • https://793776f3-68b4-44d3-947a-596ce2c6f652.filesusr.com/ugd/4e977a_bca682a8acd246c487b4f2c02bf3a103.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bidivo/hitchhiker_s_guide_thumbs_up.pdfIn PDF document text
    • http://daxotumolurotaw.rf.gd/business_administration_and_management_books.pdfIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_c9d152242e194b50a2e8f95667bf2df2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/sound_booster_max_volume_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c6cc4b3-20fe-4e88-a84b-8cd68a7d3522/xewifosilewepedolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74cc17c1-e4ce-4c82-bbd7-6e8abf6a872d/2344307316.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_ed8b398e0a6449379d1bbc1173a23e8b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/simple_table_setting_ideas_for_christmas.pdfIn PDF document text
    • https://9fbaa0db-fe9e-443e-b503-3d02ea494c21.filesusr.com/ugd/d417e9_6850bc3416dd4d33ad2c23639a8d5cc2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0ea240-d4ee-43dd-a68b-5e54aefd5fea/how_much_does_a_580_case_backhoe_weight.pdfIn PDF document text
    • http://xawisis.rf.gd/52010915712.pdfIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_3e3a3fae51ef410c950b4b008f82b9df.pdf?index=trueIn 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_off0006362d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6362D 5396 bytes
SHA-256: 70baddf006c450ce14801764913d3ecb245edd4117c9768099269b35079827e9
font_01_sfnt_off000648ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648AD 11384 bytes
SHA-256: ace7220da8b86f490507fa7539f88ce8319658532e8e135a7bea33cde9d1996e

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