Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b60b6d43d5f65a…

MALICIOUS

PDF

71.8 KB Created: 2021-06-03 00:39:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 65bffba09751c6e7081576a9fcded077 SHA-1: 3148d53c8c1f7eda64b885de13a518e4ad07da79 SHA-256: 02b60b6d43d5f65ab5dc7877b2bde1e933f39a4bd291ad15a86a1cae8c55b0d4
194 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 hosted on disposable domains, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious redirection or content delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/pbw?utm_term=modern+combat+5+cheat+codes+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458614/normal_6046703d72395.pdfIn PDF document text
    • https://meverofukibax.weebly.com/uploads/1/3/4/6/134620555/e700c.pdfIn PDF document text
    • https://xoboxevoz.weebly.com/uploads/1/3/2/7/132740619/fafirifibovifo.pdfIn PDF document text
    • https://nikevafojo.weebly.com/uploads/1/3/4/6/134680040/2129920.pdfIn PDF document text
    • https://rewuxumo.weebly.com/uploads/1/3/4/5/134586949/47e95f.pdfIn PDF document text
    • https://pebusopewege.weebly.com/uploads/1/3/4/7/134752512/6690232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460966/normal_5ff18bfa18f76.pdfIn PDF document text
    • https://bipixexomalexu.weebly.com/uploads/1/3/4/3/134349320/1663272.pdfIn PDF document text
    • https://vapovudinawixe.weebly.com/uploads/1/3/1/4/131437980/5380639.pdfIn PDF document text
    • https://fesifikigit.weebly.com/uploads/1/3/5/3/135319823/nusoretokos_dufijut.pdfIn PDF document text
    • https://pemalerokefoge.weebly.com/uploads/1/3/1/6/131606165/paladev_bazuli_sivokawala_nozitew.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/38e663fa-a460-4735-9dbf-0a8ec57470bd/dewalt_3400_pressure_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e0b9da8-0643-4168-a2a1-441c225522d3/active_release_technique_colorado_springs_co.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2381fca0-6ca5-4d82-8f47-54587a51274d/dukiluposofuwowet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06275dd5-4bd2-477f-8894-e942887f17b3/define_dead_wake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7394ab36-6c53-4f66-ba8c-76f584128323/the_decisive_moment_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ce8e9b6-b70b-4769-97e2-67f6206388c5/what_do_you_mix_with_crown_royal_reserve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1268dc8-c0cc-495b-9c06-be07115b5b4c/93412851378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c19cdf06-8374-498e-a8ca-d6c860b81d1f/download_buku_harry_potter_1-7_bahasa_indonesia.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_off0000da4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4E 5552 bytes
SHA-256: fb5dc3f194ea0cbaffbc7f6547de0f23787775a76da336e0eb7bbefe3f85a22d
font_01_sfnt_off0000ed09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED09 10740 bytes
SHA-256: 5df514ca9340888b6d2643c6ce8d5b8a19a89ac4318e0eac6431623bc3ee5e26