Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89ed533031c82ce…

MALICIOUS

PDF

63.9 KB Created: 2020-12-26 06:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 953437a94221b61164998170e8acb82b SHA-1: 46672c94ac894f98cc530bf83168c7d15600d0a8 SHA-256: f89ed533031c82ce127fa6365510a3b25e2ead7ad5e81fb3d3467ac2de00b0e5
214 Risk Score

Malware Insights

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

The PDF contains embedded links to malicious redirector infrastructure, specifically directing users to 'traffking.ru' with a 'wikispace log in' parameter. The document body, though heavily obfuscated, suggests a phishing lure related to 'Wikispace' login. The presence of numerous external PDF links, some pointing to benign content and others to unknown or malicious sites, indicates a link farm or redirection strategy. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=wikispace+log+in In PDF document text
    • https://cdn.sqhk.co/pujunuzivas/hiZ1jgC/detutavubumezewabulerep.pdfIn PDF document text
    • https://sigurapefudaji.weebly.com/uploads/1/3/4/5/134576843/0638e3.pdfIn PDF document text
    • https://janikopet.weebly.com/uploads/1/3/4/6/134690806/2498839.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/601f08cc-87a9-49d4-a3cd-a79f9d6e900c/lafourche_parish_jobs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0c8ea5a-6fe0-4650-a5dc-e3329f4518ec/oro_y_plvo_pelicula_completa_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/291e23f4-fc04-4854-976f-a6c9e4826ca3/12222405435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54aa3ccd-6b93-4399-9e9f-31f3a69349aa/76757653747.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/mepugasub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b916b05-e132-492e-80ac-65019ee975ba/fababakepikufopatufali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9455c9d8-bf9e-415d-ab39-6a9d1b17e538/tawerulolore.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_off0000bed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED2 5080 bytes
SHA-256: 490ccfd400e70d1cfc4da9eb503b8ddde7738eda335af8642a3f68d083c8e845
font_01_sfnt_off0000d047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD047 10368 bytes
SHA-256: 608b0ab1e309cab6ea492c2d1be19b347599ab731c20288ee0752f8079a1cb19

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