Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fdd9b00db731ea6…

MALICIOUS

PDF

75.4 KB Created: 2021-02-18 14:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8ca43ab3949a9c3630d5904e903a53a7 SHA-1: 4fda55da5d2165a6d6842438fb7e47dccfcc0be7 SHA-256: 2fdd9b00db731ea6dc0cd9b7e1e710e89969861b2abfb4d4c4029396f679c67b
104 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically one pointing to 'jottigo.ru', suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext, indicating the document likely contains language designed to prompt immediate action from the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/strik?utm_term=how+to+use+a+keurig+mini+plus PDF link annotation
    • http://sanegofelofut.22web.org/assassin_s_creed_2_java_mobile_game.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/if4vBEs/word_link_answers.pdfIn PDF document text
    • http://kozevoviwepok.iblogger.org/xunin.pdfIn PDF document text
    • https://cdn.sqhk.co/duxafanuke/jdifhhm/xuwirorujerel.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/0iaYRjj/11616515757.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/2jiyjiy/xikovixadesulunona.pdfIn PDF document text
    • http://tikenifoziv.22web.org/can_i_send_certified_mail_from_home_usps.pdfIn PDF document text
    • https://cdn.sqhk.co/vefutifeves/KijjbQE/pofomunikoxodez.pdfIn PDF document text
    • https://cdn.sqhk.co/pebekaja/ZujhP10/xetipukizenisesasujaxilev.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/comjdib/zujisefinijuxuguluzerofuj.pdfIn PDF document text
    • https://cdn.sqhk.co/vujuzira/Tgi7Yjc/hexagon_number_puzzle.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/woxorojero/abdullah_pakistani_full_movie_free.pdfIn PDF document text
    • http://gokevoluwizob.rf.gd/yakuza_4_hostess_maker_clothes_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_off0000e9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E0 5256 bytes
SHA-256: c0bf05fc8cf86c9c3cfbc1c88e1aba8e0118fb0a466c90cb58671a9c8d0a4656
font_01_sfnt_off0000fbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBF 10872 bytes
SHA-256: f9228444def3109fdc6bd44baf5f3a1ea50438eccfea02abaaf628a2de53a12e

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