Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd8232d3986f1a4…

MALICIOUS

PDF

87.4 KB Created: 2021-03-06 00:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0a784edeb88dde77581feeaff710aa3b SHA-1: 42dc8b198ae57b251a32af6d85e527a5d10dce6a SHA-256: 7bd8232d3986f1a4d8de5c05122fc1ccfa5b07657e015d5cbe3d72c65c700ae2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/wix?keyword=always+sunny+recurring+characters PDF link annotation
    • http://aycotoro6.xyz/fobum4i7vd.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/jetivejilugiliwerstlnu.pdfIn PDF document text
    • https://cdn.sqhk.co/nosamese/Ojdjj85/9625392834.pdfIn PDF document text
    • http://azorocheat1.xyz/52700893709km35z.pdfIn PDF document text
    • https://cdn.sqhk.co/vizebika/hchTidw/custom_alarm_clock_sound_iphone.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/hate_story_3_full_movie_online_movierulzwc2yx.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/hbm0GC8/76821410688.pdfIn PDF document text
    • http://cparta.moscow/the_gospel_of_wealth_andrew_carnegie_quotes3el7l.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/lenovo_yoga_book_c930_pen.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/gjjiehc/58870680310.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://s3.amazonaws.com/kelageketisefuv/chupke_chupke_full_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/cataratas_del_niagara_informacion_turistica.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/betpawa._com_app.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/c_programming_language_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/dd_dark_sun_psionics.pdfIn PDF document text
    • http://wegamaluperetuj.atwebpages.com/kizejufalabirofepovetiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/gupumojefaxedagikaponodaz.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/muwejukuvibabeti.pdfIn PDF document text
    • https://s3.amazonaws.com/rizoli/is_diabetes_a_nursing_diagnosis.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/strategic_business_plan_template_ppt.pdfIn PDF document text
    • http://nununad.myartsonline.com/65134655871.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/zevononurovijamore.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_off00010cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF8 5016 bytes
SHA-256: 43b22cd2772d26569258f2a994939bec44786dc51cee74bab288077842d80856
font_01_sfnt_off00011e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E09 10432 bytes
SHA-256: c1d2f6cf8d31dbec1424e48ad71aa4966b98b4de8d474dd7f6cf3b5b61b2fd8a
font_02_sfnt_off000141c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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