Malicious PDF — malware analysis report

Static analysis result for SHA-256 821740cb3be74581…

MALICIOUS

PDF

99.5 KB Created: 2021-02-28 19:06:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 56cd5a63758e9f6cdf959770e346d3a1 SHA-1: 20c9bd9fbb021124bb8770b0e8a0667149f53574 SHA-256: 821740cb3be7458118716c9e551b1bdab2bc5ca714d7cc47987be21fc41902ca
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, characteristic of a link farm or SEO spam, with one prominent URL suggesting a search query for a witchcraft PDF. ClamAV and ML classifiers have identified this file as malicious, specifically as a phishing trojan. The presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/wix?keyword=the+inner+temple+of+witchcraft+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367283/normal_601ba98ee2069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463538/normal_5fd8d0fe0014b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373297/normal_6004e0cbc0360.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_60079f11befbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd2436316e45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384030/normal_5fdf57b464f8e.pdfIn PDF document text
    • https://lajisoxe.weebly.com/uploads/1/3/4/4/134435468/nutav.pdfIn PDF document text
    • http://denarop.22web.org/24161506076.pdfIn PDF document text
    • http://wugafis.66ghz.com/bed_sheet_sizes_in_meters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_6014a54348192.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462362/normal_5fffbc2ea28a8.pdfIn PDF document text
    • https://ladupizisegi.weebly.com/uploads/1/3/1/3/131380895/4330553.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/nufidibodudulad/aruba_controller_7005_firmware.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/katiwutow.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/fixed_asset_lead_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/47645647290.pdfIn PDF document text
    • http://zasujofimak.epizy.com/baul_gaan_bangla_baul_gaan_video.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/vokup.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/what_is_the_meaning_of_transient_in_electrical_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/police_report_online_san_diego.pdfIn PDF document text
    • http://biwoxurovoke.rf.gd/subject_and_object_pronouns_worksheet_esl.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/94013157398.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/intentional_torts_hypotheticals_and_answers.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_off00014ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AB3 5260 bytes
SHA-256: f2c97835d1283846e3db58506803880f93e65baa69191583746a2f98da64bfac
font_01_sfnt_off00015c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C7D 10388 bytes
SHA-256: 14d7c083dbb1f188f3f9088ac0ddc30c04304fda94c9336f0c096e1b3147e0ac

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