Malicious PDF — malware analysis report

Static analysis result for SHA-256 57cf9b7f04e8e083…

MALICIOUS

PDF

67.6 KB Created: 2021-03-01 06:21:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 729b2a66b649cf7138f2998f942d23b0 SHA-1: c30708bab040fce3845c584ee9b611b1f329a639 SHA-256: 57cf9b7f04e8e083022a818840bbee1a2ee5cae9073e959254df85bfee2b66be
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-themed and point to potentially malicious domains, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to trick users into visiting harmful sites.

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
  • 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://leonvi.ru/wix?keyword=kawasaki+owners+manuals PDF link annotation
    • http://geekcods.com/english_vocabulary_exercises_pre-intermediatesgmhn.pdfIn PDF document text
    • http://tranquils.space/36516977998psphz.pdfIn PDF document text
    • https://fawofasoz.weebly.com/uploads/1/3/1/4/131454040/vurewetuvezode.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494451/normal_5fcc46ed99118.pdfIn PDF document text
    • http://polikarmonolit.ru/diturizela8w6i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_602c2f25d8ba3.pdfIn PDF document text
    • http://itanto.space/581777610054scss.pdfIn PDF document text
    • https://pitisugokusibim.weebly.com/uploads/1/3/4/4/134445344/f5661d06.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/88293.pdfIn PDF document text
    • http://bestunew.xyz/57967413935kkdqg.pdfIn PDF document text
    • http://damvglaz1.xyz/fallout_4_all_map_locations_perksp83b2.pdfIn PDF document text
    • http://rmk4sale.xyz/how_to_open_a_cannon_gun_safe_without_code7da89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vebisop/weather_report_for_yorktown_heights_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/all_rounder_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/pididifetubepiguwazanafi.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/vexateduvipiwapef.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/34776668525.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_off0000c24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24D 4756 bytes
SHA-256: 6cd7149486c0d80486dfbc031026a0fe80191d72750d63d39f0e2d70c3ad947b
font_01_sfnt_off0000d257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD257 9596 bytes
SHA-256: f911928ff1f913723d1820de6b7401f8789f4d0180f113f0ccd4067b82d46340
font_02_sfnt_off0000f341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF341 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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