Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e9ecac9143b48b8…

MALICIOUS

PDF

124.3 KB Created: 2021-01-19 19:32:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6badb2a726f84bd34d5cc67f9ce620c4 SHA-1: 0792052c1abf8a01ce68c99a8a64b6c886e80656 SHA-256: 6e9ecac9143b48b88c854bff37ca41b180cf147900a8ef14ffe98593d30ebc5a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and a high ML score further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or content-luring attack.

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://jacksth.ru/123?utm_term=panic+at+the+disco+band+members+leave PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393514/normal_5fe8b4db36be2.pdfIn PDF document text
    • https://site-1247032.mozfiles.com/files/1247032/solving_equations_worksheet_kuta.pdfIn PDF document text
    • https://malotote.weebly.com/uploads/1/3/4/8/134872882/pazepimex.pdfIn PDF document text
    • https://site-1177895.mozfiles.com/files/1177895/presentation_slide_design.pdfIn PDF document text
    • https://cdn.sqhk.co/gurukemopuge/jhjaicD/super_monkey_ball_adventure_ps2_cheats.pdfIn PDF document text
    • https://site-1245980.mozfiles.com/files/1245980/figamodakumopojewum.pdfIn PDF document text
    • https://site-1177895.mozfiles.com/files/1177895/81051579130.pdfIn PDF document text
    • https://site-1246592.mozfiles.com/files/1246592/crystal_reports_runtime_logging.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://susebuxusebug.epizy.com/cause_and_effect_essay_mla_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/albigen_papers.pdfIn PDF document text
    • http://sagisat.rf.gd/chinny_baby_lyrics.pdfIn PDF document text
    • http://lapamapifutul.epizy.com/lopemuzakeduf.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/oxford_bookworms_stage_1_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/79974541031.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/dosorugikejewupem.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_off00019f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F8F 2960 bytes
SHA-256: 3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
font_01_sfnt_off0001aa12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA12 5380 bytes
SHA-256: 60bde05f945bef1866f1931c16c9f9e36b7826bde262af5bcc61ea1029599291
font_02_sfnt_off0001bc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC33 11552 bytes
SHA-256: d47d3cb618b77a293907a5b456efefaeb9893dd861b50f64a53ee9b910a2b9c5

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