Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b82c1a1e06cc096…

MALICIOUS

PDF

82.0 KB Created: 2021-03-29 23:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1b12dec9bf61fcf6b3ec9078d1410299 SHA-1: 50f12e8e73f4fe89b619e6254d1e9d7e7eaf54ed SHA-256: 7b82c1a1e06cc0966c82a0d2747ca731c1af060adac9dbbe74b853877e0ec699
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an external URI and is flagged by a machine learning classifier and ClamAV as malicious. The embedded URL points to a domain that appears to be part of a phishing or scam attempt, disguised as a search result. No scripts were extracted, but the presence of embedded URLs and the nature of the heuristics suggest a phishing lure.

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://jumiwimov.ru/strik?utm_term=who+makes+coachmen+rv PDF link annotation
    • http://form-lnstagramcopyrightservice.com/youngbloodz_-_presidential_mp3qihtd.pdfIn PDF document text
    • http://begdas.fun/xvideosxvideostudio.video_editor_pro.apkl9hu4.pdfIn PDF document text
    • http://fopekoriw.sportsontheweb.net/abnormal_psychology_an_integrative_approach_5th_canadian_edition_free.pdfIn PDF document text
    • http://walkover.me/android_emulator_genymotionjmrjc.pdfIn PDF document text
    • http://on24-system.club/dakoxepedufezura9onym.pdfIn PDF document text
    • http://zisapawiwako.mypressonline.com/celta_course_trainee_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2f35f4eb-a27f-40f8-88c5-4478c948f896/sagajegedubotuv.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/ags_algebra_2.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/78768344052.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/gokotofenuturatu.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/network_diagram_template_powerpoint.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/57593993154.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/android_studio_gradle_error_fix.pdfIn PDF document text
    • http://penobugixova.atwebpages.com/acrobat_reader_protect_with_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/748e06d6-8f97-437a-81ee-0f8756f575c3/blue_is_the_warmest_color_watch_online_free_megavideo.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/lododemiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3900ebae-dc33-4d34-af53-ff5847d0e924/brandon_marshall_boxing.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/8666894024.pdfIn PDF document text
    • http://visunes.myartsonline.com/bncc_2020_download.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_off0000f87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87E 4804 bytes
SHA-256: ec5b63430c2053ee9c20060125ed45a02a1610a1143d3793656193721594ae26
font_01_sfnt_off00010899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10899 10720 bytes
SHA-256: 00bd73bd84be7fbeba5a53b232cf4df65bda8c3442ed42a430253f2331f5fbb5
font_02_sfnt_off00012d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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