Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa1b5121e7069da…

MALICIOUS

PDF

64.5 KB Created: 2021-02-15 00:56:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 22cefb8a9a53d3f44d1da1b049c4ea45 SHA-1: fbf418ed6f1b68c2088ce13e823d18479e936ed0 SHA-256: cfa1b5121e7069dabd7204c5b7df5a273768321eba468b0703a46476aed054e2
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed to manipulate search engine results. The document body, though heavily obfuscated, contains text related to 'dance academy' and application details, suggesting a lure. The presence of external URIs and the link farm heuristic strongly indicate an attempt to redirect users to malicious or SEO-manipulated sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://leonvi.ru/123?utm_term=above+the+barre+dance+academy PDF link annotation
    • http://bcpzonasegur4viabcp.com/sales_bible_jeffrey_gitomer_free_downloadwc45g.pdfIn PDF document text
    • http://golulim.iblogger.org/the_expendables_3_parents_guide.pdfIn PDF document text
    • http://papotupeti.iblogger.org/basit_faizden_bileik_faiz_hesaplama_forml_excel.pdfIn PDF document text
    • http://luchdobro.site/fire_emblem_echoes_hentaitgj43.pdfIn PDF document text
    • https://xiforamuti.weebly.com/uploads/1/3/4/6/134611992/kudililo.pdfIn PDF document text
    • https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/jigaku.pdfIn PDF document text
    • http://ritikutoxukor.22web.org/giketexabedezusilan.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/jebupofedijakuk/85002788888.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/pachelbel_canon_d_major_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/android_video_editor_with_slow_motion.pdfIn PDF document text
    • http://vovajixavago.epizy.com/email_asking_for_information.pdfIn PDF document text
    • http://limixumijegaf.epizy.com/fagor_oven_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/91953716593.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/83217800874.pdfIn PDF document text
    • http://sivigowukom.epizy.com/populist_party_platform_definition.pdfIn PDF document text
    • http://dubejatusir.epizy.com/34094341397.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_off0000b8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D7 5260 bytes
SHA-256: d7df6220e8af6f6ca1e10c6161ff5c591643265c094047f1f31f941d3b1c6ea0
font_01_sfnt_off0000ca95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA95 1852 bytes
SHA-256: c879d4b0210e847162f2c6d686728d124bd1d841235a0c83932700cac93a3561
font_02_sfnt_off0000d386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD386 9736 bytes
SHA-256: 8bca330d8f52a3ca11915f414a4e3f73a5bab5cb0cfe2ce7669963f871b11e8e

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