Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b9aa3ff25f6c38…

MALICIOUS

PDF

106.9 KB Created: 2021-02-02 18:03:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 392f18b4b122b52d261e218a0438f854 SHA-1: 7310fd04d6aaef5608a864a9a51650b5a4169018 SHA-256: 30b9aa3ff25f6c384eb7814c071ca363c478dffbef8bcbfc81fcdade8bb73d81
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by a machine learning classifier and ClamAV, with specific heuristics indicating it is an advance-fee scam lure. The document body, though partially corrupted, contains references to a 'trophy guide' and application metadata, suggesting a deceptive lure. Several external URLs were extracted, some of which are associated with potentially malicious content.

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://leonvi.ru/123?utm_term=battlefield+bad+company+trophy+guide
    • http://muzoc.xyz/fusosaluminomipivimexew8txk.pdf
    • http://mastericy-chistoty.ru/underseat_luggage_18x14x8gfhh3.pdf
    • https://cdn-cms.f-static.net/uploads/4449774/normal_5fe7b15add7ec.pdf
    • http://obzorov.site/dr_babasaheb_ambedkar_bookskec9u.pdf
    • http://freshka.fun/triphasic_bbt_chartnxsre.pdf
    • https://cdn.sqhk.co/kizajituxab/6YheYT9/rotipibobogevegavokelopo.pdf
    • http://cosmeteca.com/peggle_blast_how_to_get_long_shotsyyrdh.pdf
    • http://allrecipes.pro/pubigupavunmo18q.pdf
    • https://static.s123-cdn-static.com/uploads/4477367/normal_5fe4db738bfbd.pdf
    • https://cdn-cms.f-static.net/uploads/4481513/normal_5fd8b1123d65f.pdf
    • https://cdn.sqhk.co/vekuperik/Wljgkig/tabidawajipepexa.pdf
    • https://cdn.sqhk.co/gulifunanale/OhthdRY/umc_hospital_jackson_ms_address.pdf
    • https://static.s123-cdn-static.com/uploads/4383805/normal_5fdd6033923f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wonumafubij/47342971019.pdf
    • https://s3.amazonaws.com/pafiganovavi/marketing_consultant_job_description.pdf
    • https://s3.amazonaws.com/sorapobuk/19271617763.pdf
    • https://s3.amazonaws.com/vunizi/waltz_of_the_flowers_flute.pdf
    • http://buzawasilugije.epizy.com/tuvemetuvovalep.pdf
    • https://s3.amazonaws.com/mulerux/weather_report_last_one_week.pdf
    • http://lizomepikoxi.epizy.com/70013123939.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016607.bin
8083a0ba183a904f253b4266146835e7f94bda3069829278efe028e7f168d357
pdf-font-stream PDF embedded font (sfnt) at offset 0x16607 5684 bytes
font_01_sfnt_off00017935.bin
213cce2602758f3b1ab5143bff81fe8355d167c1df7c8d5aaaaffe7dd8fd3ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0x17935 10736 bytes