Malicious PDF — malware analysis report

Static analysis result for SHA-256 1662dd182cf3b4b1…

MALICIOUS

PDF

76.2 KB Created: 2021-02-18 02:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 575fa5d34a826ff4c8d9a09d881dda06 SHA-1: f1715c21f7612e7b4fc791973a39979af186b4b2 SHA-256: 1662dd182cf3b4b15a15e87334aa256f133fddc4495c76074db7e6880a9579c4
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL pointing to a malicious domain. The document body, though heavily obfuscated, suggests a lure related to 'celebrating advent as a family'. The presence of the external URI and the ML classifier strongly indicate malicious intent, likely for phishing or malware distribution.

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://druttle.ru/123?utm_term=how+to+celebrate+advent+as+a+family PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4415065/normal_5fe069be651fe.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/jenUijf/giwupovolut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388620/normal_5ffddb5463d99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480893/normal_601a824a607c2.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/y4hiegf/pupisutonabulugarajiwegu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369920/normal_5fdea1b88d23a.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwuwigo/djb9jcU/44672088547.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/2jegeww/kudumo.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/aicjdge/zarotokaw.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/idjiOjd/lightseekers_scannable_cards.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/sifawekujiki/performance_bicycle_richmond_virginia.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/booth_part_time_mba_employment_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/rheumatic_heart_disease_guidelines_2015.pdfIn PDF document text
    • http://poxizigifami.epizy.com/spotify_songs_mac.pdfIn PDF document text
    • http://nokarox.rf.gd/22075781850.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_off0000edb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 5524 bytes
SHA-256: 668a20595824db3de3b45919d597ed0098a527a5c40734ea96d8677eddfc89df
font_01_sfnt_off00010082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10082 10356 bytes
SHA-256: 987260cd1af5ea578f71123d95428c4d0a5152d6cca3231f1d29e382eaaafb34