Malicious PDF — malware analysis report

Static analysis result for SHA-256 62006a4709bd8ca4…

MALICIOUS

PDF

69.9 KB Created: 2020-11-19 01:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b249d7b68f1574479628c5e35ed43c12 SHA-1: 98f25cd3752cd5133e987ca0f2a2ce8560346621 SHA-256: 62006a4709bd8ca406b581594a6bb137f63235494a74dac63ea8d402d1d1f924
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Los 15 minutos'. The presence of a link farm indicates a coordinated effort to direct users to potentially harmful content, likely for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=los+15+minutos In PDF document text
    • https://riwuwodanujebu.weebly.com/uploads/1/3/4/2/134234990/nakulanave.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/gasipus-wijux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee098268-f6c0-4901-9d41-7e0e4727761e/5207374215.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/79253908369.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/initial_consonant_blends_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/homero_odisseia_frederico_loureno.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/dofaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96148250-b700-4698-8529-e7ea5496d9f4/97935083450.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/plants_vs_zombies_2_apk_download_kindle_fire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dcd5c43-f4ba-4c52-a9a1-6c91307cd73e/4898424119.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/biometricprompt_android_9.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/xijajudemufesefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffffbd9d-dc12-4839-9ee0-9b1c0f1ea3fa/kosetawunoserupufojatis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b877becd-ef90-4933-adb4-13bb77e0e24e/rotosujamabevevo.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/papa_sushiria_unblocked_games.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/el_endemoniado_gadareno_estudio_biblico.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_off0000d5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C0 4612 bytes
SHA-256: c07b3fa93aa87fbde36b3aaa28228614db5f215aa05907e4c08a7f9ffc53aea8
font_01_sfnt_off0000e56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56C 11108 bytes
SHA-256: c814c37be031362e37613be3562dea0fa133650953bf6b0c65b6ccc5e20109ab