Malicious PDF — malware analysis report

Static analysis result for SHA-256 5675cfbb6ea45d31…

MALICIOUS

PDF

65.2 KB Created: 2020-12-10 11:54:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 154be2e02c34b50250d2962a3d6ae14f SHA-1: dd02c5337024b497dd03276fab52ea46b489b2ab SHA-256: 5675cfbb6ea45d31aba6ed74d65b844a5927c1320a0625fdc81dfa7f32338e81
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/strik?utm_term=institute+manual+book+of+mormon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5fa3998f514ef.pdfIn PDF document text
    • https://lazesomixasima.weebly.com/uploads/1/3/4/5/134588612/644680.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/1568393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5fa68188d2aa7.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/jamokaroxoj/xizufamigiwuzelekud.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/lionhart_tires_customer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5596d526-2371-4461-8e44-e3d58daf9775/93442210801.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd1e0c89e1c4b8fb81223/t/5fc7b79248d5672cfb494538/1606924179984/virtuafoot_football_manager_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671e8746-0640-4442-8cfd-268add081a21/haynes_manual_online_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/il_cantico_dei_cantici.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc68f7488c99b6d37ce80fd/t/5fcd5da105ddc9599d330d76/1607294369841/spaceflight_simulator_download_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89f0f7cd-68b3-4ec1-8540-1fec9990993e/71916370984.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b6dda5bc066edfb157b0/t/5fc83a38d32d012678f2355d/1606957624308/82566341229.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/popujagivefusubuwilen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d38fbf70-5289-413e-a01f-1908b4614aab/handy_dandy_guide_for_solving_economic_mysteries.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013fe3398ff751529adbc/t/5fc691dd145a8629dc97563c/1606848989115/99709150660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a52fe99-6b67-4c3a-ba62-3ab4dcdb7e22/fogoduzek.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc583b0affbf90a6609c4d2/t/5fcc92fbd235d37878c04af8/1607242492777/vebunimok.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_off0000b530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB530 4936 bytes
SHA-256: 4b03d93aa3f449af4ad06a5188f5512aa406479afc94e90b6cfada45023b000d
font_01_sfnt_off0000c5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CD 10516 bytes
SHA-256: 47a8fe75322769f79aa923002078fc04cda0188bdf62b364f2316dbb0121a365
font_02_sfnt_off0000e989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE989 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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