Malicious PDF — malware analysis report

Static analysis result for SHA-256 00986b80f3b238d3…

MALICIOUS

PDF

71.6 KB Created: 2021-03-02 21:01:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 3864cc56d5fe099cc3fd383ad9126c36 SHA-1: 2618b2d6d92f754cf17d8e9000e635defe33bd0a SHA-256: 00986b80f3b238d32900c8c37ebd3819691df6ad6484f5e4bb9c0d27bbcedcfc
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with at least one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to distribute traffic or host malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://dafemum.ru/123?utm_term=how+to+crochet+granny+squares+together+left+handed In PDF document text
    • https://static.s123-cdn-static.com/uploads/4444370/normal_5fe1c95ec16ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5fdff0a466670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482218/normal_60333581998c3.pdfIn PDF document text
    • http://rozel.ru/spectra_s1_vs_medela_pump_in_stylesxqus.pdfIn PDF document text
    • https://cdn.sqhk.co/bivotiboma/ZNLrcge/epic_games_fortnite_installer.pdfIn PDF document text
    • http://creamwalls.space/42329058197jsm27.pdfIn PDF document text
    • http://arevakar-travel.com/what_ink_cartridge_for_epson_wf_3640j6t3s.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/7163952.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/jimugivos/67157203241.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/what_is_necrotic_cell_death.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/online_admission_form_format_for_college.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/jurassic_world_alive_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/aur_ahista_kijiye_baatein_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/8124268428.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_off0000db27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB27 5564 bytes
SHA-256: 5b3d3f65617ffc55b47bf15512326036a514da258d2f1a7457e3b71f89560347
font_01_sfnt_off0000ee1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1B 10356 bytes
SHA-256: 803ad06d5c788213e1349d7af9e0c6042b8a0b7fac9f2aaa4943a771aad8afc2

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