Malicious PDF — malware analysis report

Static analysis result for SHA-256 14974847a565c350…

MALICIOUS

PDF

76.6 KB Created: 2021-01-12 14:31:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0f744bcd6e3c07280a96ef292731763b SHA-1: 373211e912702ec32bbd9a5db67d0d2c4c12e9a2 SHA-256: 14974847a565c35013d9ad10a1ed6b77551459212ccbcce2917585378c16bc10
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate it's a malicious PDF, and the ML classifier strongly flagged it. The document body, though partially corrupted, suggests a lure related to 'three branches of philosophy pdf', which is likely a pretext to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/aws?utm_term=three+branches+of+philosophy+pdf PDF link annotation
    • https://site-1177739.mozfiles.com/files/1177739/free_coloring_page_puzzle_piece.pdfIn PDF document text
    • https://site-1244981.mozfiles.com/files/1244981/ignou_assignment_guru_2018-_19.pdfIn PDF document text
    • https://site-1172627.mozfiles.com/files/1172627/fake_gps_location_apk.pdfIn PDF document text
    • https://site-1176302.mozfiles.com/files/1176302/human_resource_management_functions.pdfIn PDF document text
    • https://site-1208189.mozfiles.com/files/1208189/flying_arrow_archery_toxic_t3100_broadhead.pdfIn PDF document text
    • https://site-1166625.mozfiles.com/files/1166625/4912707108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_5fd83a8f78a82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418973/normal_5ffc67a84039f.pdfIn PDF document text
    • https://site-1166680.mozfiles.com/files/1166680/sapasezaxoke.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/6Zjeiex/sky_kingdoms_store.pdfIn PDF document text
    • https://site-1178760.mozfiles.com/files/1178760/suzukutoxan.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/tokit/bolitokixit.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/zuzofijilelanekigatajal.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/87484762117.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/messia_maricoa_alo.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_off0000eae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE3 5432 bytes
SHA-256: 39560abca359c8469dcd339a9036bb0df78c45ae0b1a7acf929d1f686d1a5400
font_01_sfnt_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 11948 bytes
SHA-256: be41a01be882d43113820f6ebaca700eae61b4833ae511f988bedd7277f7ead1