Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e8e04cac94572f…

MALICIOUS

PDF

73.4 KB Created: 2021-02-04 08:21:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6bf22b18730ca4e6dabbec82048ab923 SHA-1: e777ee4861669a51ecddb6038748423f04b45f81 SHA-256: e7e8e04cac94572fb8674bb8ec2af416e0eb3c1fbdc2ff91d6c0196ba87afa2f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result for a popular song, likely as a lure to direct the user to a malicious site. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=heavy%20weight%20bhangra%20song%20%20djyoungster PDF link annotation
    • https://jexiliwole.weebly.com/uploads/1/3/0/7/130739190/nirolasujona.pdfIn PDF document text
    • http://ritibaj.22web.org/82725307978.pdfIn PDF document text
    • http://boviriso.22web.org/44296859269.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/broadsword_quest_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/catanzaro_informa_incidente.pdfIn PDF document text
    • http://fusizizugunu.epizy.com/kukagujuminizaze.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/refeg.pdfIn PDF document text
    • http://zajegugolex.epizy.com/65320937304.pdfIn PDF document text
    • http://wedizakur.epizy.com/list_of_learning_objectives.pdfIn PDF document text
    • http://rifovedukuj.epizy.com/23410132944.pdfIn PDF document text
    • http://gexegufikide.epizy.com/ballena_azul_informacion_en_espanol.pdfIn PDF document text
    • http://renirujetumofid.epizy.com/abandoned_cart_email_template_klaviyo.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/puledisizewidodaguxinaf.pdfIn PDF document text
    • http://refubexat.epizy.com/mbstu_admission_circular_2017-_18.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/3836255021.pdfIn PDF document text
    • http://kusegewamuzazod.epizy.com/number_1_businessman_full_movie_hd.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_off0000c2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A7 5484 bytes
SHA-256: 53d417a554207f0cb93c39fc73f381298e46f2624acddeb97c1f262eb99d8f1f
font_01_sfnt_off0000d55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD55E 3984 bytes
SHA-256: dc66d093d60567775bc0c90ea1d7020a76a839f6970398e882499029f610894f
font_02_sfnt_off0000e506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 15836 bytes
SHA-256: 7563db881b9cf01bf3e6482545e151461a91d07a8c4c7701a31be45ddcfe6496