Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3a14cda98040cf…

MALICIOUS

PDF

76.9 KB Created: 2021-02-17 10:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a07acd57b1ab7f6c05f9e0d70678349c SHA-1: 0e4a3b7580846ab359ecdec7c256574d095e51ff SHA-256: fa3a14cda98040cf348eccb5a5227e3d1868f6c22e55eb339c428132d8017bf4
126 Risk Score

Malware Insights

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

The PDF contains a disguised link to a malicious URL, identified by the heuristic PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS. The document body, though heavily obfuscated, contains text related to 'Jcpenney associates kiosk login', suggesting a phishing lure. The presence of multiple external URIs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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 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.
  • 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://jacksth.ru/wix?keyword=jcpenney+associates+kiosk+login PDF link annotation
    • http://sodaapp.club/gukapevhmhlb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_600cfa03294d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382408/normal_5fcdcc7d7acac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_601252b4d9611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403565/normal_600f16a02ebbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ff6771e211f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5fd1c5fd7e4d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469101/normal_600d454e665dd.pdfIn PDF document text
    • http://hotloveme.online/515477459154i46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368758/normal_5fe45bbee4e55.pdfIn PDF document text
    • http://devlp.club/fayette_county_georgia_arrest_reportsd5vwt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogisujomixugo.epizy.com/angle_pair_relationships_worksheet_kuta.pdfIn PDF document text
    • http://rewoponoxeki.rf.gd/guvajegoz.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/cymascope_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/24672886253.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/brightness_driver_for_windows_7_ultimate.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/australian_student_visa_application_form_sri_lanka.pdfIn PDF document text
    • http://xelilurezo.epizy.com/meredatesaba.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_off0000ef0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0B 5160 bytes
SHA-256: 10643220013200a93d7957c34be4e86de2933065e37ec589f6aa0c0515363638
font_01_sfnt_off000100c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C5 10968 bytes
SHA-256: 14b1b3f511e621d5424f4fd3a18911c1abf54d7f0fb547b5f23397bcc7ab2a89

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