Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb724537393f6ad3…

MALICIOUS

PDF

72.0 KB Created: 2021-01-11 17:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c6782bb2969bfbb67bf12e2c1169986c SHA-1: 98791c508a7c8df22210aedbb7a485b43ca3e5b1 SHA-256: cb724537393f6ad3230ffe5277aebc54d1f839760ee56fc61bf782bb5064d345
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are disguised as free movie downloads, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

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://trafffe.ru/wb?keyword=free%20tamil%20movies%202020%20download PDF link annotation
    • https://site-1186310.mozfiles.com/files/1186310/bombsquad_ios_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/wf9iajd/addons_for_minecraft_app_store.pdfIn PDF document text
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/gamejuwu-zajonadupujowiv-jexegewetixinib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5feb8c72a1f7c.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/Yliejj0/8197590592.pdfIn PDF document text
    • https://site-1175236.mozfiles.com/files/1175236/fanatical_basketball_mod_apk_android_1.pdfIn PDF document text
    • https://site-1167951.mozfiles.com/files/1167951/kung_fu_zion.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/adda90.pdfIn PDF document text
    • https://site-1167947.mozfiles.com/files/1167947/go_kart_running_from_police.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/sivanira/kirkton_house_100_cotton_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/72091688006.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/consequentialist_theory_of_ethics.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/group_b_strep_bacteremia_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/86481866042.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_off0000dc75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC75 5352 bytes
SHA-256: fe6cc86ec6268d3682f906fe312d5b73ee12b1aaec516297ead748f2120a815b
font_01_sfnt_off0000eea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA3 10700 bytes
SHA-256: 0f23f420ee3a0d01bf74098556a8723c1e877d1529b3281a47acc1e6c6f5aac0

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