Malicious PDF — malware analysis report

Static analysis result for SHA-256 79e44d117d0eb46a…

MALICIOUS

PDF

71.2 KB Created: 2020-11-25 00:56:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 24274e2a2f2bf535c4e0a041c6bf7966 SHA-1: 2b695c739b7010baac249395e5ecb13423b233c5 SHA-256: 79e44d117d0eb46ac5e47fdcf013ae908b7a51d037daf0c4c899afc382e7cc01
214 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is likely used to direct users to phishing or malware hosting 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
  • 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://ggtraff.ru/aws?utm_term=maths+puzzle+for+class+5+with+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4473963/normal_5fbae2057c647.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/mitelurebin-mejivatalori-beniged.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/palegizetizofip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384460/normal_5f99e524cb9fd.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/4040d7c7-94b8-44bd-8ae5-5632cc841fb7/99146970016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc9ab916-2d20-40bd-8437-be9db321c245/jizijalipisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560653a7-e2b0-41f0-87c8-92c56ea5b068/dipitarovagisametiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94db1c30-f1a6-4e1a-a106-89d64151b151/map_of_westeros_and_essos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc6432e-ea07-4177-aec5-188d1f328014/the_bourne_identity_full_movie_300m.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4105d61b-5c47-4fe5-bd30-9a73bc148680/6_letter_word_starts_with_v_ends_with_e.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/ziwaxileja.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/beziworuwewasawor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a87721e1-4b5e-4635-b34f-3c1cf56b52b9/38714820432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75764cf7-01a3-4215-9bfa-df670d734e71/91889363369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c7d729-e970-4e51-a061-bc8de3f86cf3/nomumapomejogowifakuzowog.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_off0000d91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91C 5372 bytes
SHA-256: 25d09593a2d7510d7ae090ae5df8202cb008a2ca3baa118b4c95cf8b0867fc5e
font_01_sfnt_off0000eb8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 10580 bytes
SHA-256: f90dc8504c2f3fef458de494ca63ff9f034473e4f284e41dc2762ef2099aefe3

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