Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad9220e6ce3eeb8…

MALICIOUS

PDF

75.8 KB Created: 2020-11-22 15:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0fb79ba62cb8c4f825effd2cd7f946c2 SHA-1: 72e42bf1fe53ba0c3f4b38e5fad17ce7649e5e9a SHA-256: fad9220e6ce3eeb8ffb6072bc8103c4b66278e46249aaf5ee7906e86f081ecd5
214 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, with at least one identified as a known malicious redirector. The heuristic firings indicate a link farm designed to direct users to potentially harmful sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.

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://cctraff.ru/aws?utm_term=sample+action+research+in+science+teaching+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f872f0eb182d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fad2cdd1da87.pdfIn PDF document text
    • https://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/e834ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_5fa0b65b15dbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_5fa2ddc920c5e.pdfIn PDF document text
    • https://guromofir.weebly.com/uploads/1/3/4/4/134489627/vetibavidexa_xaduriparitadab_mifevi_lopotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366336/normal_5fab32eb2aa0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_5fb8986d846fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382973/normal_5f8c48f97a3b1.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/joterige/contract_of_employment_template_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a459d2a8-ae9a-413a-ba85-f3ef5a00adaa/lost_stars_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/ipad_mini_4_ios_12_user_manual.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_off0000eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB22 5672 bytes
SHA-256: 55b8de5a444c8d1a560a90f911c765f0f251267a14d15411e76c6b5119823138
font_01_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 10656 bytes
SHA-256: cdae9ff35753384fc1f3564195996e5a71367e4d53f98697b4aba51e82d4fef6

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