Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba316399bce51c41…

MALICIOUS

PDF

71.1 KB Created: 2021-05-22 16:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a5916ad72d73e123109025532fbddad5 SHA-1: c036751907425d2a993b7deb93372fbb8e0a18ac SHA-256: ba316399bce51c41bd5373927b595d382feb427b11f3addd41bf17a7dd2a50a8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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-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=brainpop+civil+war+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368951/normal_5fde49d1e4031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_6050f0f75a7c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_6023fba43ab78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482406/normal_6039d336492c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_604e23aec42f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420238/normal_5fed32c3c7ec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497650/normal_5fd9bee31b219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501027/normal_604a9d8260ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_60666c6341641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477655/normal_60523f94daa58.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/pezofut/breaking_into_wall_street_interview_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/dowetonogajofupizer.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/flowers_images_wallpapers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/32118128208.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/mosewesufopis.pdfIn PDF document text
    • https://s3.amazonaws.com/jigezilor/andromeda_strain_streaming_ita.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/21908364960.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/filtre_analogique_cours.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/porulibogipi.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_off0000d6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D0 5296 bytes
SHA-256: 983bdfdbc10c68c81448498bf8eb4364f0c281b99ab04abd011e60de2a425f80
font_01_sfnt_off0000e8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FC 11288 bytes
SHA-256: e552d389ba0ab41ddee94ab7d573fe4ef17cb05a3a08178243a5694b80a78962

Open this report in the interactive analyzer, or submit your own file for analysis.