Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d9f3064c8ef2cb…

MALICIOUS

PDF

62.2 KB Created: 2020-11-20 08:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b926918b79aa7ac80df4e861c408db1d SHA-1: dc7ef2d9c685c13843fc7e49721b6ab5675abe3f SHA-256: 22d9f3064c8ef2cbc41bc7871b22d74c05b84aeb6c28ef02b987fabfd4fac310
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to potentially malicious or spam-related domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection and ML classifier also strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or SEO spam campaign designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafficel.ru/strik?utm_term=pdf+of+the+outsiders PDF link annotation
    • https://lalusaguru.weebly.com/uploads/1/3/4/6/134611329/f572da.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/gipij.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/sakaburepagase/vekuloziz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d12593-043d-4ce3-a105-319abbf4e87d/jedekokifetetilijow.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/97623938013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caaeafe1-5930-4c99-9465-7ed13671eb1e/introduction_to_networks_28version_5.1_itn_chapter_2_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/geology_trivia_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/ccleaner_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/juloxifisot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821a7249-bddb-43cf-a51b-4881d8351311/pioneer_avic_d3_manual_cz.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/41834507033.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_off0000ab72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB72 4528 bytes
SHA-256: 1d7e16aae69b13fc87ed9f0878624a5e93350bc985d23ba26af4241c446fedb0
font_01_sfnt_off0000baed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAED 10480 bytes
SHA-256: d0f8bdcbb0573db4e92d3d8d70c7e615c4a8ea015f81a7bc5986fc5278ae4401
font_02_sfnt_off0000de32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE32 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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