Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a21e4a42efbf8f…

MALICIOUS

PDF

65.5 KB Created: 2021-02-22 11:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 37c9adb25ec00fc6bbd7409cbe84dd71 SHA-1: 7627c383f51d92112ccaddfc55616575931d6725 SHA-256: c2a21e4a42efbf8fbef32bc6cc825adc33e7376a478cba9ae6e142b32fcb5697
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with a lure related to 'Simcity 4 windows 10 full screen'. ML classifiers and ClamAV also flagged this file as malicious, indicating a phishing or trojan payload. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=simcity+4+windows+10+full+screen In PDF document text
    • https://cdn.sqhk.co/sobupepokor/lhecxjj/29803392389.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/gdmunXN/riwujikedase.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/N5jSiaL/cryptic_crossword_solver_telegraph.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/jajhKha/judeviteratup.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/ifHicUN/crossfire_series_book_3_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/icgchjf/little_misfortune_game_demo.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/EjeihUy/offline_poker_games_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/jjicgco/lomaniwinemulijaf.pdfIn PDF document text
    • http://xokenijogowupe.22web.org/71368987552.pdfIn PDF document text
    • https://cdn.sqhk.co/mudaxomemut/fihXRgi/vevoso.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/gjJRWJ0/wogejig.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/fujadabez/walebufosuxawenugom.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/31439944357.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/lufek.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/robuxesineligudupifip.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/sistem_informasi_akuntansi_manajemen.pdfIn PDF document text
    • http://watuginidimefil.epizy.com/kawai_piano_models_guide.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_off0000c260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC260 5536 bytes
SHA-256: 916ab60ee429c0b22a20a4ec23be8e38be1699b51f318ea8cef9e684fc0e8929
font_01_sfnt_off0000d547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD547 10420 bytes
SHA-256: 22acedbd8f477be15856407457d013785ec7b78555c87f5d2174ea815ad0e7db

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