Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa5a90b131a79a5…

MALICIOUS

PDF

80.6 KB Created: 2021-04-04 17:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a1b7e7378e3cda2c87e95bfe51b89d6b SHA-1: 88384587ac4806e7c8001269581ee8bddfbc5962 SHA-256: caa5a90b131a79a5e789a68f51dda468e43aedbe8fb7ae7bc2a5a6823f419bb8
96 Risk Score

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 0.9998

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://bologen.ru/strik?utm_term=how+to+open+an+ipod+nano+5th+generation PDF link annotation
    • https://cdn.sqhk.co/rupomotiz/gftiaNw/scary_teacher_mod_apk_unlimited_everything_android_1.pdfIn PDF document text
    • https://fajizaxaro.weebly.com/uploads/1/3/1/3/131381717/eea12c9dfd1d9c0.pdfIn PDF document text
    • http://xazoxewimimo.iblogger.org/can_you_create_an_online_store_with_wix.pdfIn PDF document text
    • https://mizovitima.weebly.com/uploads/1/3/4/2/134266674/zapawe.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/qMgdjjw/6350803401.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/sefipa/21859514712.pdfIn PDF document text
    • http://fobilal.rf.gd/82799857487.pdfIn PDF document text
    • http://vudemiziwifimo.epizy.com/goxakefizebewewa.pdfIn PDF document text
    • http://ribitotuv.epizy.com/ssc_mts_admit_card_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/tavigosozeromomojutuladed.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/car_racing_games_free_no.pdfIn PDF document text
    • http://fipadavujegow.rf.gd/59838227283.pdfIn PDF document text
    • https://1d942ef5-affb-47d8-8f99-70a3d187b733.filesusr.com/ugd/3283b0_202b1eb94ed54c5cbc95ced78b1659ec.pdf?index=trueIn PDF document text
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_129199d4207646c7ac9026ef192400d7.pdf?index=trueIn PDF document text
    • http://jilawovo.epizy.com/possessive_pronouns_activities.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/counting_stars_lyrics_free.pdfIn PDF document text
    • http://pudubekij.epizy.com/woolworths_online_application_form.pdfIn PDF document text
    • http://nutimuratibuzur.epizy.com/getuwarufew.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_off0000fdb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB1 5188 bytes
SHA-256: e60ba125420fc8c5379373a88f54b1a48b4f0d7294383884884d5531cdd4075a
font_01_sfnt_off00010f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F64 11076 bytes
SHA-256: 129340dead8b69274f391e8f2d4d2e81206410710d2071899df8b96775d9048c

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