Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7dc9337e4bfbebc…

MALICIOUS

PDF

79.9 KB Created: 2021-01-19 01:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a9ccdb4d8a4c119cdaf70a7c28e2a483 SHA-1: d09983d3678414d36568e8631c9ac54490c64d5c SHA-256: e7dc9337e4bfbebcacd8ca21604a3ef2e3766f98cb2078fabcd4214550bb41a1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to mimic Craigslist pet listings, serving as a 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://maypoin.ru/123?utm_term=craigslist+orange+county+pets PDF link annotation
    • https://cdn.sqhk.co/tajiwikiter/WKbk59s/94939380484.pdfIn PDF document text
    • https://cdn.sqhk.co/pimepojuti/qtuiijd/92159835980.pdfIn PDF document text
    • https://cdn.sqhk.co/gedadixugud/7l3x24D/65091177836.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/hbZ1kjh/limumexaketasivexawup.pdfIn PDF document text
    • https://cdn.sqhk.co/fukafodifi/MLieuqz/idle_forge_tycoon_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/dhdh0gf/focus_bank_mobile_banking.pdfIn PDF document text
    • https://cdn.sqhk.co/zisazege/hcjcbjg/dodago.pdfIn PDF document text
    • https://cdn.sqhk.co/mitebosareki/hg6Bejj/24268491280.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/gdhajbh/zariziximezozofituwifu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://liwubujuwu.epizy.com/79622548029.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/33293399125.pdfIn PDF document text
    • http://rujesuluxure.rf.gd/godivumake.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/tixujuvew.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/17421977790.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/82731978451.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/65828071371.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/strength_of_organic_acids_and_bases.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/xitojos.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_off0000fdb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB1 5108 bytes
SHA-256: 8041db9c5c4ad76b54e9ae2aa20f7786235e30110895747f36ed9409aaff8299
font_01_sfnt_off00010f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F29 10236 bytes
SHA-256: f1d87f189937b389ea43153528b826301b7d418ff87ea99c4b83c1ae1b2575bd

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