Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60666ca47ca1be4…

MALICIOUS

PDF

86.9 KB Created: 2021-05-15 04:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2183f93b6591ad576d8ad429de0a53a5 SHA-1: d110777aa37dbd1821e1c74b978100f1664a3dd8 SHA-256: c60666ca47ca1be4c74c6b2e28b8877e9e08ee08175dde6664df0e0ed24688d4
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 'botokaw.ru', which is likely a phishing or scam site disguised as a product search result. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, suggesting it was programmatically generated to appear as a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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/strik?utm_term=samsung+qled+tv+50+inch+price+in+india
    • https://cdn.sqhk.co/nuzifixe/6ogcmji/56310759661.pdf
    • https://cdn.sqhk.co/toxodimina/3FhggcF/oxford_learner_s_thesaurus_apk_full.pdf
    • https://static.s123-cdn-static.com/uploads/4366304/normal_5ff1360d7ae5b.pdf
    • http://mujabelor.mywebcommunity.org/u._s._flag_code.pdf
    • https://cdn-cms.f-static.net/uploads/4490950/normal_604dafcf66209.pdf
    • http://moxupasasitote.mywebcommunity.org/vertical_line_test_examples.pdf
    • https://cdn.sqhk.co/joxutedunik/whb3Rig/gagorilojenix.pdf
    • https://cdn.sqhk.co/liritefebat/V1Zsjfg/25991992256.pdf
    • http://fulifubajamo.mywebcommunity.org/78454748200.pdf
    • http://nekazupafo.mygamesonline.org/animal_sounds_in_english.pdf
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5fd807c416534.pdf
    • https://static.s123-cdn-static.com/uploads/4389576/normal_6002641ac5b02.pdf
    • https://cdn.sqhk.co/pimabosi/BKjjfie/death_coming_up_the_hill_full_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_e1133e07fc964ead8756f6f80d44c5e5.pdf?index=true
    • https://s3.amazonaws.com/figidireki/ihss_timesheet_hotline.pdf
    • https://uploads.strikinglycdn.com/files/27756396-9d3c-4cf2-a2a9-df8df1df09ef/random_dd_story_generator.pdf
    • https://s3.amazonaws.com/remuv/35630076510.pdf
    • https://1b6fe947-be7e-4494-9a94-f566f178d3d1.filesusr.com/ugd/89064d_5fa8ac3b2606464ea8ae399e9c38ab26.pdf?index=true
    • https://s3.amazonaws.com/genukopapovixo/13180766145.pdf
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_5634ee47e798484aba69b09c58277faa.pdf?index=true
    • https://uploads.strikinglycdn.com/files/515d655e-d9cb-4d74-9cbb-a206457e3e9c/kupez.pdf
    • http://vujuvisesakok.myartsonline.com/job_interview_questions_and_answers_tagalog.pdf
    • https://s3.amazonaws.com/donarepemi/will_zelda_ocarina_of_time_be_on_nintendo_switch.pdf
    • https://0778d94d-b67d-49c3-8f6f-43f52d6edec9.filesusr.com/ugd/b85eb0_3177df2e662243718e99b404e44d50dd.pdf?index=true
    • https://s3.amazonaws.com/fobupojowojon/chess_app_for_both_android_and_iphone.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f197.bin
d0d44b307244ad2fd5e310625ed4951c33c0cb2e3e8df1e3ce71e9af2ba26274		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF197 5816 bytes
font_01_sfnt_off00010526.bin
db15a1d878404796d516b181f454105e910905d30a567813b4c01ca87c294b7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10526 10760 bytes
font_02_sfnt_off00012a14.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A14 16164 bytes
font_03_sfnt_off00013f29.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F29 4324 bytes

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