Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d5e7cce1a418fb…

MALICIOUS

PDF

70.0 KB Created: 2021-04-03 01:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6f8e354b1093019e45b7b310417c9562 SHA-1: 245ab3575545e8f9befdbd536ff8cae26170edc8 SHA-256: e9d5e7cce1a418fb85c4bac777a129f0741a8670acee2aadfbdf9b8d08199516
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'resalured.ru', which is flagged as suspicious. The document body is heavily obfuscated and appears to be junk data, suggesting the primary malicious function is to redirect the user to the external URL. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://resalured.ru/strik?utm_term=what+is+d+bar+in+stats PDF link annotation
    • https://cdn.sqhk.co/wigalefu/agj6zad/33422068726.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/fifhcig/top_safety_rated_front_facing_car_seat.pdfIn PDF document text
    • http://suletupi.22web.org/vehicle_bill_of_sale_illinois.pdfIn PDF document text
    • https://cdn.sqhk.co/kefaforuletu/jbZieEk/easy_origami_shirt_and_tie.pdfIn PDF document text
    • https://cdn.sqhk.co/xamozafi/giqBJha/wakigigivomevedupugabu.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/gfeILhf/32354173999.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/ZGhgqG0/class_9_science_ncert_solutions_chapter_10.pdfIn PDF document text
    • https://cdn.sqhk.co/gizafimode/ighaoL4/township_game_hacks_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/cZxaTjh/history_of_african_american_hair_products_walmart.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6f8fad0b-4681-4956-93b6-774def27233f/walmart_black_friday_tvs_55_inch.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/flowers_for_algernon_short_story_or_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99336c96-5c78-41d7-8d67-bb30db947eaa/physics_for_scientists_and_engineers_serway_jewett_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/weather_report_west_lafayette_indiana.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/23043842605.pdfIn PDF document text
    • http://liruselewaviba.rf.gd/synonyms_worksheets_4th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45a8f54-f6c3-41e3-aa2e-6571ba064a64/healthrider_s300i_price.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/theme_analysis_of_everyday_use_essays.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/gerunds_worksheets_for_grade_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b481f6a6-93a5-4000-859a-7a14cb2f2017/how_much_do_global_marketing_managers_make.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2035fb87-2e4c-4569-832e-c4a1ebd84c16/96119371027.pdfIn PDF document text
    • http://ganiwozipowure.epizy.com/the_one_novel.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/bigunumaz.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/69141638844.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/bachon_ki_kahaniyan_in_urdu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB5 4596 bytes
SHA-256: a388ba873b7c6c5293291cdda2c1ca3f32858d15a4cf66c698c0b6c80c054d59
font_01_sfnt_off0000da34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA34 10100 bytes
SHA-256: dd9da5ac2dd52cc9bf64d05ea929e5459c35b33c3461fdb8d91e611c08b0af4e
font_02_sfnt_off0000fccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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