Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de5d13cc692b3d6…

MALICIOUS

PDF

81.2 KB Created: 2021-02-28 21:25:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 93adddb5f45859efefdd7cfbf23a83a2 SHA-1: b6357ec9685c483bda190af9265d4b5e2474f026 SHA-256: 7de5d13cc692b3d64fc3fd59801cc76c040ddce0bac44610917ee14e2257f11a
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 suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'Asus z97 cpu support list'.

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://gimoguvi.ru/wb?keyword=asus%20z97%20cpu%20support%20list PDF link annotation
    • https://cdn.sqhk.co/satidaruxami/OIijyvL/allegiant_air_flight_status_punta_gorda.pdfIn PDF document text
    • https://cdn.sqhk.co/salijuvam/jhhghbk/39290238963.pdfIn PDF document text
    • https://cdn.sqhk.co/gananotez/ghsyOgj/70531154816.pdfIn PDF document text
    • http://fragcups.com/626398830273x618.pdfIn PDF document text
    • http://indonesia2health.online/sodalavuvakaxadizoxefatid1lzcm.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/cdyjgtv/real_nfl_football_helmets.pdfIn PDF document text
    • http://naturebiolog.fun/72451943443p8057.pdfIn PDF document text
    • http://azorocheat1.xyz/92964049116tezyp.pdfIn PDF document text
    • http://lnstagramverifycentre.com/kotavomizujubokurenebezixp8l6x.pdfIn PDF document text
    • http://supermagazforsale1.xyz/how_to_draw_the_cheshire_cat_face_step_by_steptwsa0.pdfIn PDF document text
    • https://cdn.sqhk.co/leperanurosi/iejdiii/xaririmakipo.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/vufupu/play_store_change_account_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/15821657948.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/kirovugem.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/koresegevasivokewizuzaj.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/talolurowusejugosetapodi.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/amazarashi_new_album.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/90009441905.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/temefovifubo.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_off0000ff72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF72 4992 bytes
SHA-256: 59517e419bbbda571e5d3149a52e42550151ae4f1e75415bbef3b35ced06b19a
font_01_sfnt_off00011091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11091 11444 bytes
SHA-256: 255189e697363a278fa15d5cd8072bcccaf3475293caaef9e0cfcfce39dacc01

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