Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac1e150f5a6efe66…

MALICIOUS

PDF

86.1 KB Created: 2021-01-16 16:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 62368057ee78d8f3fcba8f0c255fd154 SHA-1: 6a115449042a88c3e150f1c3417290f7cc775d46 SHA-256: ac1e150f5a6efe6672340d824f5bc5a8c3a48e8c0a5ef3e3b5f13eaafa178c61
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=princess+alia+al+hussein PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460232/normal_5fa91da29f374.pdfIn PDF document text
    • https://site-1178208.mozfiles.com/files/1178208/fuxodikagu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427509/normal_5fdfc9a24b431.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374968/normal_5fe369bb79784.pdfIn PDF document text
    • https://cdn.sqhk.co/xetosusaxi/fgiicig/best_buy_theater_nyc_concerts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449014/normal_5fc84484eefb5.pdfIn PDF document text
    • https://rariborujur.weebly.com/uploads/1/3/4/4/134443596/3957998.pdfIn PDF document text
    • https://site-1172264.mozfiles.com/files/1172264/turbo_league_mod_apk_2__2_download.pdfIn PDF document text
    • https://site-1178403.mozfiles.com/files/1178403/zevabimatubetupuwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369653/normal_5fcd906b901fa.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/rerinago/job_interview_questions_and_answers_for_receptionist.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/35548465523.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 4888 bytes
SHA-256: fe028fded06fec09ef6188879ba60f4735313138d505762697cb69002da18c65
font_01_sfnt_off00010f2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2B 11500 bytes
SHA-256: 78bd2c68fd163a7ed982dcf96e5c12fb290bbe50b0175ede707d82575fa6b7d6
font_02_sfnt_off000135ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135AE 16356 bytes
SHA-256: 8a28ef2f4b0d9bb7d59e2b5ba2c850178d4b7f875108e80d05cd1ea94d9b335c

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