Malicious PDF — malware analysis report

Static analysis result for SHA-256 819c24e273fcec73…

MALICIOUS

PDF

72.4 KB Created: 2021-01-21 23:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d8f34f53799a2d2125576eeb2d067c50 SHA-1: 939589600c937233c060b18f4885ac57460be993 SHA-256: 819c24e273fcec73f161cc067845146f164e257374c9ee611160aef1d561b2f6
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'jottigo.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to 'meet the parents cast tv show', indicating a social engineering attempt.

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://jottigo.ru/123?utm_term=meet+the+parents+cast+tv+show PDF link annotation
    • https://cdn.sqhk.co/rodesedaded/gdgcdev/acrylic_nails_french_manicure_square.pdfIn PDF document text
    • https://site-1183491.mozfiles.com/files/1183491/92869896989.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380869/normal_5fcd44e0296e8.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/5rkgjgc/21741913116.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391915/normal_5fd7a3897b8b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371014/normal_5fdcc99ed5460.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ffc38fc1735e.pdfIn PDF document text
    • https://site-1174993.mozfiles.com/files/1174993/tumblr_wallpaper_for_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413578/normal_5fd1df57018f0.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/nosepevozux/reading_worksheets_for_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/zawozi.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/autodesk_character_generator_full.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/app_store_for_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/zalumijawa.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/chlorella_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/nikoniwakipizuzedo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 5148 bytes
SHA-256: b45a940fbd88d8f2098bda57a4048c69f45336f70185583363c08151c2d98bfe
font_01_sfnt_off0000efc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC6 10436 bytes
SHA-256: 20164aab9c19d396b4ce5282bb815eac251c7cd1c7ace5340c7f8779b487947d

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