Malicious PDF — malware analysis report

Static analysis result for SHA-256 b282dee7e3cc28e6…

MALICIOUS

PDF

75.1 KB Created: 2020-12-15 13:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bc25972b42508e0a41190290b1c6fe69 SHA-1: 426a0f5ce1601d92fd18d9bf62af592aef52a922 SHA-256: b282dee7e3cc28e6db3b0c8d12edaa51390937f37577c4051d2cdbd16b12790e
196 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a link farm (PDF_SEO_LINK_FARM) and an external URI pointing to a download-related URL. The presence of a password-protected archive lure suggests an attempt to hide a malicious payload. While no scripts were directly extracted, the overall structure and URL usage indicate a phishing or malicious content distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=cube+world+alpha+download+2019 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4505699/normal_5fceb38567c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8ba267cfe6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365998/normal_5fc6229ad8278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424347/normal_5f978f5de8d1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5fb2c056a41ee.pdfIn PDF document text
    • https://seperabe.weebly.com/uploads/1/3/4/7/134714478/juxes.pdfIn PDF document text
    • https://madudezogimune.weebly.com/uploads/1/3/4/3/134326665/3470086ca0.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/sesakaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_5fb85e0bb6f3b.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://static1.squarespace.com/static/5fc556af8787e879898964d2/t/5fc62da0bc819f1cf4aae39a/1606823328935/basic_marketing_terms.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fcea466c9e098024024989d/1607378023041/animal_sounds_sms_ringtones_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e929d79364840848fdf/1606373011729/71613907484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e335694a-f4d6-4174-9e83-3cea316dea58/87789386813.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_off0000d931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD931 5360 bytes
SHA-256: 07b2580a95709d49fd045df9346ef04575d23a36688053884f24f9cc82ca6fdb
font_01_sfnt_off0000eb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB63 11200 bytes
SHA-256: 0959f2113d1b7e28cdb6f00c5ecabd17b9b03fd375bb3b872ab9d468c5deef65
font_02_sfnt_off00011178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11178 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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