Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aaefbf32cf32750…

MALICIOUS

PDF

72.7 KB Created: 2021-02-16 19:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 5a09d7cb9ec2b4b8eb66184506517ad2 SHA-1: 7c382a2cf10a4d72fa3b85f02de5e4f2050f2e0f SHA-256: 3aaefbf32cf3275067e36833b5fe1b7aae0402b581668beb64b4beabf90ac09f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a lure related to LG TV apps, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=how+to+apps+on+lg+tv PDF link annotation
    • http://tonalemeketav.66ghz.com/jebimilesarenuko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5fdac20adb361.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382960/normal_5fce14dbcff51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444378/normal_6023c4e80e03d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451374/normal_5fe859a1e68bf.pdfIn PDF document text
    • http://fitdieta.com/before_the_flood_worksheetstwq9.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
    • http://bezopiwuzalobit.rf.gd/58472415248.pdfIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/mla_citation_guide_8th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/stickman_archer_hile_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/calvary_temple_telugu_messages.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/wijabefusepijamowubil.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/malcolm_baldrige_criteria_for_performance_excellence.pdfIn PDF document text
    • http://xegiseko.epizy.com/bufitajotize.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/boutonniere_deformity_little_finger.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_off0000d469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD469 4624 bytes
SHA-256: 0a5a07c5342f8c59fdf89c4a7bcba130ca42d4386774f57f1aaba0bc090a7abd
font_01_sfnt_off0000e43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43D 10508 bytes
SHA-256: 717f48927d35aa66df182c1a9e13e733ea34917da405c02616c3680b576c134c
font_02_sfnt_off00010830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10830 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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