Malicious PDF — malware analysis report

Static analysis result for SHA-256 149f8703338f01bf…

MALICIOUS

PDF

70.5 KB Created: 2021-02-24 18:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 6fb2420d62de09eae8875b6dfbc3998c SHA-1: 286b85d15fe8caef9ff622a1849b156df4d859dd SHA-256: 149f8703338f01bf39e4c4c10975447e36ba488a31cd8ec721ece8a9d9f638af
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with several heuristics flagging it as a link farm and a potential phishing or malware distribution vector. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs, such as 'http://livecopyrightverification.com/zemavotodamewimapamekifafllsoe.pdf', are likely used to download further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://baarspo.ru/strik?utm_term=harry+potter+characters+patronus PDF link annotation
    • http://lofitner.buzz/pubuxabemonibelh4471.pdfIn PDF document text
    • http://klokisik.space/54627348913dob51.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/74491449300i4n94.pdfIn PDF document text
    • http://livecopyrightverification.com/zemavotodamewimapamekifafllsoe.pdfIn PDF document text
    • https://pewarefat.weebly.com/uploads/1/3/4/3/134361746/f2924fe13.pdfIn PDF document text
    • https://mugevodotigo.weebly.com/uploads/1/3/0/7/130740084/6c2c8c64b780a6.pdfIn PDF document text
    • http://paypallsecurity.com/veronica_roth_four_a_divergent_collection8vdei.pdfIn PDF document text
    • https://gonibulurigudum.weebly.com/uploads/1/3/0/8/130874364/8159554.pdfIn PDF document text
    • http://espaceabone.com/what_does_it_mean_to_be_gnostic3me5t.pdfIn PDF document text
    • https://tasototunone.weebly.com/uploads/1/3/4/7/134755659/950336.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/xojafemori/xetetago.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/bukan_cinta_biasa_film.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/email_marketing_automation_platforms.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/sajebutidunodikukam.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/daihatsu_charade_g100_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/60716471952.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/bizosubokaki.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/describe_the_3_laws_of_motion_with_examples.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_off0000d7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A3 5052 bytes
SHA-256: 2174f3de7a6b8241b03ff4d34336d0b5953bd8e5882163a1a58f068a658d1379
font_01_sfnt_off0000e8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D4 10652 bytes
SHA-256: c6c57e070cc5e47c1e467a3897174c0bf9b966aa668d2d410fa0984cc95ecce0

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