Malicious PDF — malware analysis report

Static analysis result for SHA-256 b49ef3e423db24ca…

MALICIOUS

PDF

78.7 KB Created: 2021-03-02 19:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 7de833e2354de5f54d09c3522b0e7957 SHA-1: 44cafd1346b0474af53113f6b390b417f8217f28 SHA-256: b49ef3e423db24cac6e2e90d03a8576935ee833183f299fb7363e3ba229b723f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a malicious domain, disguised as a search result for 'omron manual blood pressure cuff'. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=omron+manual+blood+pressure+cuff PDF link annotation
    • http://lotto-investclub.com/entrepreneurship_course_description81wvo.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/jgSSjgo/zombie_defence_games_pc.pdfIn PDF document text
    • http://zuxekagapefe.mygamesonline.org/what_is_noise_in_the_knife_of_never_letting_go.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_600e3279d929a.pdfIn PDF document text
    • http://sexesex.site/58618960899b2jsz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367273/normal_5fca86c88c7a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_600b4be8976dc.pdfIn PDF document text
    • http://wozupabalaviv.medianewsonline.com/are_monster_ultra_vegan.pdfIn PDF document text
    • http://tufejife.22web.org/mufomiweruvijelo.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/23325730795.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/buponuwebi/gezapomuxunedax.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/vopojesad.pdfIn PDF document text
    • http://tukakuze.epizy.com/93018177654.pdfIn PDF document text
    • http://fofepiroxazu.epizy.com/how_to_write_a_short_essay_250_words.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/bong_sense_app.pdfIn PDF document text
    • http://zovameden.rf.gd/gunotukesa.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/46122760911.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_off0000ea2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2B 5220 bytes
SHA-256: fc04cb3a2182387fda638fd1a3633991312803b8ad46426f03c328fa368f2b2c
font_01_sfnt_off0000fbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBB 10368 bytes
SHA-256: 8983471fdc54d0e99a8e77504d4c1b77b2609df72d0aaa6f23770e7dc02a20e5
font_02_sfnt_off00011f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F3A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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