Malicious PDF — malware analysis report

Static analysis result for SHA-256 c120c53cf71cc6a5…

MALICIOUS

PDF

67.6 KB Created: 2021-02-23 11:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 578b64cea3a70de5fbb92f70309d17a3 SHA-1: 4d7f903b8cf96dc762524c16c7e9ea592be0846f SHA-256: c120c53cf71cc6a5169bdeca086a103b32407d542e6b69eeb8e546a5bbfcfec9
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://jacksth.ru/wix?keyword=easylanguage+manuale+italiano', suggesting a phishing or social engineering attempt to direct the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely involving the exploitation of PDF vulnerabilities or the redirection of users to external malicious 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/wix?keyword=easylanguage+manuale+italiano PDF link annotation
    • http://salonop.xyz/62054605716a9hh.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/ajcnHgj/men_s_beard_looks.pdfIn PDF document text
    • http://cmb-accueil.com/age_of_empires_2_hd_the_forgotten_campaignsxpdfi.pdfIn PDF document text
    • http://wisitens.online/letter_from_birmingham_jail_purpose84qwz.pdfIn PDF document text
    • http://wowezixuxaxu.22web.org/40600400093.pdfIn PDF document text
    • https://cdn.sqhk.co/guzikiku/jAcehEv/64099329628.pdfIn PDF document text
    • http://cesaregaspari.com/650653230093ljif.pdfIn PDF document text
    • http://bbflowers.net/19061162753hsz3o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/report_bugs_hypixel.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/building_construction_planning_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/gapor.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/chemistry_of_actinides.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/jovibaxizitudufigite.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/79263495605.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/zotuvigonewuvafefone.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_off0000cd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD57 4968 bytes
SHA-256: bf32acc6e17fd24c1e0c1b414c0c0f46892ea7c2912c584e76d2a45333c06bed
font_01_sfnt_off0000de40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE40 10576 bytes
SHA-256: dd8a203ecbdf1cfaab4423ef008275d136b3d75c13e858b8547778901c375387

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