Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fab4e6f7d5a1a1…

MALICIOUS

PDF

72.9 KB Created: 2021-04-02 16:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 73926cd4741639acc2c3ee83d6cf6034 SHA-1: 54e529246805ff142826387fb913723ced8df4b6 SHA-256: 28fab4e6f7d5a1a14a5f8b3fa30b522abf5d8dbbc4832a085359642b822db28d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=digixstream+dx4+specs PDF link annotation
    • https://xasavogo.weebly.com/uploads/1/3/1/8/131856096/d54c3b6ff98.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/bosidrtz8q.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/tlcharger_minecraft_dition_de_poc3u2jd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379049/normal_5fccc003589c4.pdfIn PDF document text
    • https://feredelulewijun.weebly.com/uploads/1/3/2/6/132681536/7cb8aceddbc3a3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470841/normal_602b62bf55944.pdfIn PDF document text
    • http://subujipon.iblogger.org/70078225060.pdfIn PDF document text
    • http://buloshnaya.site/what_were_the_three_terms_of_the_treaty_of_guadalupe_hidalgodl07w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465701/normal_5fececee8579e.pdfIn PDF document text
    • https://gedesinikus.weebly.com/uploads/1/3/5/3/135323437/96a6b27250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_605ba4e2b1b01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421472/normal_5fef9ee74c003.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/zizene/elkay_water_fountain_maintenance_manual.pdfIn PDF document text
    • http://tafujeloraxofo.epizy.com/46152581991.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/rustoleum_cabinet_transformations_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/58143115350.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/format_bootable_pendrive_ubuntu.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/specialized_sport_bike_odometer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/girobanizivaxurezoxufibe.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/new_delhi_railway_station_platform_ticket_online.pdfIn PDF document text
    • http://metusajixano.epizy.com/bozusisegofonimabepovux.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_off0000daa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA8 5516 bytes
SHA-256: 35cced5b3e7b2a9db2327bb8fce8c9d886dd3420bca996009ee133f3c35875b8
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 11732 bytes
SHA-256: 83d254e0628821c5868f2fca6540dd5e4cb806f6be4f4aacf77c1ef8faa927d3

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