Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d854bc5283d35b…

MALICIOUS

PDF

78.5 KB Created: 2021-04-29 02:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9a6d4389f852417a8f88fccfb60c0d5c SHA-1: 1b849053577d9387b1beea94f76480b078932946 SHA-256: 65d854bc5283d35b684d61339d258f6561189f9bd4517fed6d64ff9141a7df57
96 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, specifically as a phishing trojan. It contains an embedded URL pointing to 'jottigo.ru', which is presented in a context suggesting a lure related to car repair. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=how+can+you+fix+a+blown+head+gasket PDF link annotation
    • http://fuxuxixigu.scienceontheweb.net/84881877047.pdfIn PDF document text
    • http://mumijivamivaxij.medianewsonline.com/64310296104.pdfIn PDF document text
    • http://tadolonelo.sportsontheweb.net/anti_acne_diet.pdfIn PDF document text
    • http://xonejalevesezom.sportsontheweb.net/rojegibaweg.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/36670621892.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/67105511178.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/wizukus.pdfIn PDF document text
    • http://burivuvuju.medianewsonline.com/periodic_table_color_download.pdfIn PDF document text
    • http://rivafigikiwax.medianewsonline.com/bali_tourist_map.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://s3.amazonaws.com/xijuxosisomuna/sibefexijizukuvawira.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/69985569657.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/algebra_lineal_inversa_de_una_matriz.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/34317165790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36cf1277-1860-4957-950c-678b310b6cf5/flowers_in_the_attic_movie_free.pdfIn PDF document text
    • http://nudagimanefej.atwebpages.com/causes_of_lung_cancer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77f6c5e-dc58-4ee9-bb68-415d9a2c9300/43752122586.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/international_marketing_jobs_nyc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/550483a6-1f0a-411d-b090-79581c60041a/xefeva.pdfIn PDF document text
    • http://sagoralezerelo.onlinewebshop.net/moselapibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc6dc657-ccb2-4022-bf23-36d71373d0c9/8532376479.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c1cfafa-34fc-4c3e-a0cf-9900ac468c45/miruxilovupalewidefufu.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/43690507452.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_off0000e93b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93B 5496 bytes
SHA-256: 933c1a3d32bbf385db015eb5466d69816e91a4fd46e6a9b900262fcf9d22de53
font_01_sfnt_off0000fbfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFD 9968 bytes
SHA-256: 08a8dbd315348cab27e313a1c2ece047acbb6b4cdbd2239663429d56b2093471
font_02_sfnt_off00011e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E12 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.