Malicious PDF — malware analysis report

Static analysis result for SHA-256 db07012bfa7f5fb7…

MALICIOUS

PDF

74.8 KB Created: 2021-01-15 00:34:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 38353ebb16f3e480c676df55babbbef5 SHA-1: 4d6a01e1c38a33a584623638cc7f1970aeab4e99 SHA-256: db07012bfa7f5fb70f74803b60d8f5c799089c3a9fe8c8a4830efd0e14b317de
244 Risk Score

Malware Insights

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

This PDF document is classified as malicious and contains numerous embedded URLs. Several of these URLs point to known redirector infrastructure, indicating a likely phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=power+pamplona+y8 In PDF document text
    • https://site-1175777.mozfiles.com/files/1175777/50530076916.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/eb251.pdfIn PDF document text
    • https://sufifova.weebly.com/uploads/1/3/4/7/134736026/16b3a915b.pdfIn PDF document text
    • https://site-1192291.mozfiles.com/files/1192291/maze_runner_4_film_uscita.pdfIn PDF document text
    • https://fijomenameti.weebly.com/uploads/1/3/0/8/130874411/jizasuwepipufagi.pdfIn PDF document text
    • https://site-1172119.mozfiles.com/files/1172119/pulse_rate_chart_exercise.pdfIn PDF document text
    • https://site-1178022.mozfiles.com/files/1178022/94293239135.pdfIn PDF document text
    • https://site-1175189.mozfiles.com/files/1175189/vokizifuritema.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/1816054.pdfIn PDF document text
    • https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/guvosaxem-penaveje-zawelowasavosu.pdfIn PDF document text
    • https://site-1252721.mozfiles.com/files/1252721/fefototamimakejesamixav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497131/normal_5ff9154468b00.pdfIn PDF document text
    • https://site-1167950.mozfiles.com/files/1167950/ms__birds_of_prey.pdfIn PDF document text
    • https://site-1176202.mozfiles.com/files/1176202/share_chat_telugu_funny_video_download_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7ED 5176 bytes
SHA-256: 6c2fbc3f4e0a689ca99f5ae858c01d588bfcd57ab770cbff444e68865dee5961
font_01_sfnt_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 10752 bytes
SHA-256: 896b3d26ca5d580ae889f0a47f630d5a6538189b7cf0fafcde2e697bb6eef746

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