Malicious PDF — malware analysis report

Static analysis result for SHA-256 1470467e5ecf6392…

MALICIOUS

PDF

88.8 KB Created: 2021-02-23 09:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ca3a7e01e89f29d71ca5e609e1d84ba SHA-1: 0e6dcfb97f56a44a3f2fe73e4e3bb1d4143b82db SHA-256: 1470467e5ecf6392a953134040a029fbd76299b9e983d5051a041ba4382a8c11
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded external URI pointing to a suspicious domain, and numerous other unknown URLs are present within the document. The document body is heavily obfuscated, but the presence of these URLs suggests an attempt to redirect the user to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=emergent+layer+height
    • http://urolog.xyz/89142598015ru6ww.pdf
    • http://itclick.pro/petuxifuxisipoxagamixuji8q5qg.pdf
    • https://cdn.sqhk.co/jukowejazus/hbgiiiF/the_adventures_of_tintin_full_movie_in_french.pdf
    • http://gelchlen.fun/zuminozibipuvonatubodujndk4g.pdf
    • https://cdn.sqhk.co/nasanoroge/zfhbcBN/formula_car_racing_simulator.pdf
    • http://alex-travel.moscow/samsung_members_beta_apk4n27t.pdf
    • http://praktika-ingenieur.com/33050735496pw7pd.pdf
    • https://cdn.sqhk.co/wenewojufaj/ghjggf0/71577697517.pdf
    • http://peludofnor.fun/35972259406nn5zh.pdf
    • http://uniques.space/tintin_freeajt0z.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/labitajaxatufib/scientific_notation_chart_worksheet.pdf
    • https://s3.amazonaws.com/kosamupim/71266267898.pdf
    • https://s3.amazonaws.com/wegugus/41340062466.pdf
    • http://luwegovufa.epizy.com/metformin_dosage_pcos_treatment.pdf
    • https://s3.amazonaws.com/jolituzoji/android_video_call_app_source_code.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011511.bin
a4ca9ec0e43865a540e9b25bb60c36c171828867919573ce8471dffaceddcbe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11511 4660 bytes
font_01_sfnt_off000124a7.bin
8aaddf323aeb21bc9e8c37f0a5cec83859330b6673b39cdbd35d9842042b4e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124A7 10436 bytes
font_02_sfnt_off00014855.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14855 4324 bytes

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