Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc9e2be79256634…

MALICIOUS

PDF

78.1 KB Created: 2021-03-15 06:44:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15f3e468cd5f3910b9340a9a95d3fc57 SHA-1: 704423132469e5d27c4c13648bd6ab114e0846d0 SHA-256: 8cc9e2be79256634979cd357efa0fa9b04eef364667fccc375a6242ea431fee0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://botokaw.ru/award?keyword=que+es+materia+en+quimica+pdf', which is likely a phishing lure designed to trick users into visiting a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of external URIs and the malware detection strongly suggest a phishing or credential harvesting attempt.

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://botokaw.ru/award?keyword=que+es+materia+en+quimica+pdf
    • http://salea.site/28814654940bh0f1.pdf
    • http://dehydratedoriginalgoodness.com/rigedubamubikevopekig8blwj.pdf
    • http://copyrightproblem.com/la_casa_delos_espiritus_resumen92xmq.pdf
    • http://se-mrush.com/how_to_make_soft_bread_using_bread_machinemdebw.pdf
    • http://lisojuribopuwad.22web.org/fluid_catalytic_cracking_science_and_technology.pdf
    • http://reduslim-eu.site/axial_yeti_xl_aftermarket_partsaiz6q.pdf
    • http://bravos-kids.ru/zoom_g1x_four_guitar_lab_softwarezt8sl.pdf
    • http://tomolijoponix.mypressonline.com/philips_smartsleep_hf3520_60_manual.pdf
    • http://drilltech.info/kineligp8v82.pdf
    • http://pasetbs.xyz/wukutitejator7yc9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tunenijexe/mr_bakra_kannada_movie_songs.pdf
    • http://xutenodopo.rf.gd/92955590884.pdf
    • http://watusatuvor.myartsonline.com/53352134516.pdf
    • https://s3.amazonaws.com/kegubinefuda/48487756904.pdf
    • https://s3.amazonaws.com/feliso/wizamokovumaxitonopixu.pdf
    • http://fituxulilofe.epizy.com/jepeviredavimilul.pdf
    • https://s3.amazonaws.com/dadupawo/sahih_al_bukhari_free_download.pdf
    • https://s3.amazonaws.com/fosagoba/77330317271.pdf
    • https://s3.amazonaws.com/dazuxujepov/gijedupamuxoduw.pdf
    • https://s3.amazonaws.com/rowubunak/de_gruyter_journal_style_sheet.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_off0000e246.bin
313633986a0e5596fd3fcec2024adfae75d34d5417952842dbff564a0e969b09
pdf-font-stream PDF embedded font (sfnt) at offset 0xE246 5228 bytes
font_01_sfnt_off0000f3eb.bin
c68f95d84a77100aec7d19f831bb900b42e945786959ba25a34a76af5b749267
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EB 13008 bytes
font_02_sfnt_off00011bb7.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB7 4324 bytes