Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35d3d2d096837c9…

MALICIOUS

PDF

265.0 KB Created: 2021-01-23 11:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ba952c855312af709c15a0d53d047803 SHA-1: 231288a4f9eb0671b1584931f82834da43acb7a1 SHA-256: e35d3d2d096837c911c595972f1e1a8fd1e698bce60db33ee9439edb7a5b85b7
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the lure mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9342

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://traffset.ru/aws?utm_term=advaita+vedanta+books+pdf PDF link annotation
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/b19a45cc0d2.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/ieDiigd/17338189202.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/gjdGgeQ/mubomipubari.pdfIn PDF document text
    • http://pimavegi.22web.org/52654901773.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/geHHkhf/dragon_quest_builders_2_dlc_ps4.pdfIn PDF document text
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/kikuvi.pdfIn PDF document text
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/totamijipitiv-girogesupa-sebabe-napisewefamamur.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/gihdmih/hearts_of_darkness_documentary_123movies.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/akrCjhT/mijuvilo.pdfIn PDF document text
    • http://tapadobav.iblogger.org/magazine_layout_free.pdfIn PDF document text
    • https://cdn.sqhk.co/divabasom/jhjibbL/mini_snakes_for_sale.pdfIn PDF document text
    • http://sukujemegamog.22web.org/video_helper_chrome.pdfIn PDF document text
    • https://cdn.sqhk.co/mowasikuso/SjhUkih/ates_ve_su_oyun_skor_2.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/1OgdUZ3/newegg_cell_phones_unlocked.pdfIn PDF document text
    • https://cdn.sqhk.co/mapigusene/RTFJqPD/jetujiwabisugojusis.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/40242439209.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuporalegumema.epizy.com/molecular_biology_notes.pdfIn PDF document text
    • http://mafevela.rf.gd/fractions_decimals_and_percentages_worksheets.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_010_off0003f3b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F3B6 9996 bytes
SHA-256: 7d70a359a895a6ff191ffaa0202cb9fdebab81ddc2c05a831f7ddcdbcbb243c7
font_00_sfnt_off00039db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39DB2 3300 bytes
SHA-256: 90284a5d50e70f3eeaafc6a9e5404256cb382ee67787a476d5f0418d46197c35
font_01_sfnt_off0003a978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A978 5160 bytes
SHA-256: 76f3092313847e1b5273927b5c102f5454120da7842612275e79dad286831d37
font_02_sfnt_off0003bb20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BB20 3740 bytes
SHA-256: eb903a4bcabb0673128613fc2c6a3b3be6b6be0204d11159aa2f590e1d82ee93
font_03_sfnt_off0003c699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C699 15296 bytes
SHA-256: 0067d32b3a8032d6806e9f0637fef8cc864574780f3314f5d1705a4eb97428e0

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