Malicious PDF — malware analysis report

Static analysis result for SHA-256 222aafaf9bd0d086…

MALICIOUS

PDF

73.3 KB Created: 2020-12-22 03:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5cc8e72c9c94044bc5a75647a2e63dd7 SHA-1: 9fe86e079571f86e179385ac71578d56f4404e34 SHA-256: 222aafaf9bd0d086ae3ca215162c286ef2e9250699a32203255a889f4042e5a8
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/strik?utm_term=pop+star+catchphrases+animal+crossing PDF link annotation
    • https://nofabirudop.weebly.com/uploads/1/3/4/4/134455392/tozujaxajufijolodani.pdfIn PDF document text
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/df3b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5faff3ad615ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_5f945e7335871.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/jedobufudajewu/byron_bay_gig_guide_july_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17ddbf9866f3fd2d885d9/t/5fc496c9a97599144e8b16b5/1606719178749/chores_in_spanish_quiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc79c85e71df64d6bd9c29/t/5fdcbc1d354b8b0b882a1948/1608301598500/46444122427.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/chm_2045_final_study_guide_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c84d62-ed3a-4de2-bb7b-3bf2ffeb82d0/tepijeloz.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/wikexojopelomijavawi.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/depakojimi.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/22049206471.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64fc43398ff7515529cec/t/5fd74ec99264095525f0a1ff/1607945930146/secret_superstar_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/xofomasinenapewogawew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddad07ab-23c1-4ada-a8fb-825058c39d62/american_standard_of_perfection_2016_review.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_off0000e0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F4 5348 bytes
SHA-256: 489f5292bce273d3824efbdf2d0aaeede97ec7220d1a75a880ea8cc615d5e253
font_01_sfnt_off0000f2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FC 10952 bytes
SHA-256: f47105eb56ab5e513cd7821188bbfe1623af36d75c1ce3b1cc7d0749090eb9af

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