Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bbbf765592a9a47…

MALICIOUS

PDF

75.0 KB Created: 2021-03-29 15:42:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 8938073a3dcf32c651738238eea29012 SHA-1: 5764d87956d06ef4efd06f12c0553b11f700cb97 SHA-256: 9bbbf765592a9a472fd059aaf5b81a0e56c1f4a8571b1e9a6afe4b5b97b93c93
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical 'PDF_SEO_LINK_FARM' rule, indicating it contains a large number of external links. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. The embedded URLs suggest a phishing or content-farming scheme designed to redirect users to other sites, likely for malicious purposes.

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://jottigo.ru/award?keyword=scaling+lean+agile+development+pdf+download PDF link annotation
    • http://zaxevef.getenjoyment.net/36574240269.pdfIn PDF document text
    • https://dowusezawidi.weebly.com/uploads/1/3/3/9/133997386/wujadeb.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/eqggge6/billie_eilish_bad_guy_live_glastonbury.pdfIn PDF document text
    • https://benodamefeju.weebly.com/uploads/1/3/5/3/135346815/991ce.pdfIn PDF document text
    • https://cdn.sqhk.co/bebubofawa/HjgfN4Y/earthquake_los_angeles_ca.pdfIn PDF document text
    • https://papukelub.weebly.com/uploads/1/3/4/6/134666119/zuranezujatugamaji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_7605e9f3857e4b0b9b079ace3f74bd61.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zupenafud/35521937241.pdfIn PDF document text
    • https://5c06e36d-e6a7-492f-989e-88f86e9ca1b1.filesusr.com/ugd/c9ae65_5e7aabcc878843e88a4a8791d90590a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/alteryx_tool_sharepoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a80ec68e-83c2-4f63-88c0-46ac95fa9f88/gothic_3_walkthrough.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f28ffb9-cd21-401e-acba-9c4060a52162/what_are_considered_acts_of_terrorism.pdfIn PDF document text
    • http://sukokovevaz.atwebpages.com/summer_infant_banister__stair_gate_with_dual_installation_kit_br_-_r_exclusive.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/tisamijajafopafevubiveli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fac761f-94c6-4619-be60-221bc6f31c24/how_to_calibrate_omron_blood_pressure_monitor_hem_7121.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/catholic_answers_deuterocanonical_books.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/39320490645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb19c096-d18c-4323-ba94-f2abfdbd6c54/how_to_use_ebt_card_online_costco.pdfIn PDF document text
    • https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_cf1bd352d3934bf698a05af7bde63f03.pdf?index=trueIn 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_off0000e37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37D 5456 bytes
SHA-256: 631e2900a6f79da11c0746de48ff9132b6642bb819c6fffce414e82f467fb3d4
font_01_sfnt_off0000f61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61C 11336 bytes
SHA-256: dac51c876ec911430ca748d56fd1804839128e16c2febc0d8784e9e01c12eb6a

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