Malicious PDF — malware analysis report

Static analysis result for SHA-256 baed3f7410728b06…

MALICIOUS

PDF

79.0 KB Created: 2021-02-13 20:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 11f40ad61192a8a672b0d0c64e6f7de0 SHA-1: c147b876f66e563c4ad205f68064620b404001e3 SHA-256: baed3f7410728b060f039361685a4a2630a245c037f51124bf4fe8af7f08e389
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL disguised as a "mobile phone repair manual". The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple unknown URLs suggests a campaign to redirect users to malicious sites.

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://maypoin.ru/123?utm_term=mobile+phone+repair+manual+pdf+free+download+in+hindi PDF link annotation
    • https://cdn.sqhk.co/zewesifadeka/dkTECPt/wazalobakafedadeke.pdfIn PDF document text
    • http://serviceforyou.site/86564021123r3l38.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/5iajccP/cats_are_liquid_a_better_place_packs.pdfIn PDF document text
    • http://shopmzm.site/fumexegojuvamapekrhzbp.pdfIn PDF document text
    • http://risiwivozival.iblogger.org/fapegazik.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/advgiga/13859313112.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/geyggja/tovawubilamakadunikiji.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/b7hfwzp/43402514266.pdfIn PDF document text
    • https://cdn.sqhk.co/pixisuja/aeieijH/75342721279.pdfIn PDF document text
    • http://datinge.site/wuzegikijuzizibefawepifof2qc57.pdfIn PDF document text
    • http://copyright-services-us.com/diamond_colour_clarity_guideeh58y.pdfIn PDF document text
    • https://cdn.sqhk.co/duburijudi/ehgggqM/nifewupaj.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/tikofaketonub/angry_babies_film_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/physical_security_risk_assessment_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/mtnl_ka_full_form_kya_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/basic_english_grammar_book_saddleback.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_off0000f7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C0 5340 bytes
SHA-256: 8b5e16e22c70f9ce6d2d66767bf84c7e72d11285d61569b60430338eec70f7b2
font_01_sfnt_off000109d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D2 10724 bytes
SHA-256: c297b72278d94db981d286d4f8461a26a2da308c3b78065efcc8708f30c3f3e9