Malicious PDF — malware analysis report

Static analysis result for SHA-256 bacf3d78cb40735a…

MALICIOUS

PDF

62.8 KB Created: 2021-01-09 00:23:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b1986ba15108414eb4bc3ab1d394ad23 SHA-1: 11e70541b2ab0cf9a0ff23f84e53ec9ba6165d9a SHA-256: bacf3d78cb40735a0e66d4bc98243cc6c8d097b81c1885a54f9ee2fa0d8ce17f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with one specifically pointing to a URL related to 'twister game font', suggesting a lure to a malicious website. The presence of a large number of external links also indicates a potential link farm for SEO manipulation or phishing.

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://traffnew.ru/wb?keyword=twister%20game%20font PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497646/normal_5fe6329e51cfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_5fa05a3181a02.pdfIn PDF document text
    • https://gisixumaxen.weebly.com/uploads/1/3/1/8/131856636/1483602.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/cidgchg/sudifekag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393791/normal_5f91a4d02fc07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5fe5a1e3dc4b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_5f8ebc27d9f9f.pdfIn PDF document text
    • https://moxuwurenawa.weebly.com/uploads/1/3/0/8/130874588/werusaxo_fafugaro.pdfIn PDF document text
    • https://cdn.sqhk.co/sarimotel/KCijFKG/cure_in_traditional_chinese_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/Zgeidib/29823617189.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/sajezife/a_m_b_u_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/zugebokerenofesonoloviri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e187682-7b83-4a0b-8a82-36431522704f/xonifoxifaxezow.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/cqc_report_lakeview_care_home.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_off0000b8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A0 5096 bytes
SHA-256: dbca5729aacaba7fd2752098b32f06a37b660a39e96529b73b0d1247847a060c
font_01_sfnt_off0000c9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F3 10796 bytes
SHA-256: 0060981eb8bef428ebce69f7d63a3d681ed6403fd584075d4f35acd530c36389

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