Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5da5352d0f20d45…

MALICIOUS

PDF

92.6 KB Created: 2021-03-22 12:45:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36ecebc3c42b9cb3f6985a123d88dbef SHA-1: b15e1cf9e581ebfe031a46b8a545046e5fb18301 SHA-256: e5da5352d0f20d45a61af0df840baf52cc3912e5b21a160b60022f6c265f5524
136 Risk Score

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating an advance-fee scam lure. The document body, though heavily obfuscated, contains references to 'snow apk uptodown' and metadata indicating it was generated by wkhtmltopdf, suggesting a potential lure for a fake software download. The presence of an external URI pointing to 'lozipotod.ru' further supports the malicious intent, likely for downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://lozipotod.ru/wix?keyword=snow+apk+uptodown
    • https://cdn.sqhk.co/wexunaveb/xhgjihb/hackers_game_redux_imdb.pdf
    • https://cdn.sqhk.co/nilamemiw/izjcThf/besame_mucho_sheet_music_alto_sax.pdf
    • http://kanaxade.mygamesonline.org/tikeroramogu.pdf
    • https://cdn.sqhk.co/bigulikexupa/aaggrlW/46171122568.pdf
    • https://kowezuvive.weebly.com/uploads/1/3/4/6/134603832/modovuvopilinokeke.pdf
    • http://gojawufeki.getenjoyment.net/sukobuvedufalu.pdf
    • https://lamipakowoj.weebly.com/uploads/1/3/2/8/132814468/51e42f05e9.pdf
    • http://bositozibab.getenjoyment.net/calaveras_literarias_cortas.pdf
    • https://cdn.sqhk.co/tazifawixax/VPhbjbd/nanijelemidotono.pdf
    • http://bukipumil.mypressonline.com/26668647029.pdf
    • https://xibagepop.weebly.com/uploads/1/3/1/4/131438114/1819560.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://baletax.onlinewebshop.net/fabirerizefodotekefuvog.pdf
    • https://5eefd455-ac5f-4839-b9a8-14d0ea4f4771.filesusr.com/ugd/7a7fb1_aadbb02e834c4662bedb9528bb5485c8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/beb77bc1-64cf-4fd7-96fe-2254a3270539/cyberpower_pc_wont_turn_back_on.pdf
    • https://54570836-76ea-4100-b78f-d1ba4c3cc0d1.filesusr.com/ugd/21ac59_e88470c3950840b8ba5402506ee86f9e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a22aa86c-de7f-4d49-90ae-98a949ceb11f/99430432545.pdf
    • https://dba0ca6b-c979-46b3-87c9-041648dee063.filesusr.com/ugd/6f58fb_f3304067a4ff4ef9a3b7aa6d58c7e3aa.pdf?index=true
    • https://68358877-4ee6-4e53-94f7-4bd9665c1f53.filesusr.com/ugd/3bbd68_6973ff84a45e4512afcbe00597b67156.pdf?index=true
    • https://uploads.strikinglycdn.com/files/172f6dc5-3fee-4fa6-8626-789f17a72aca/11221068691.pdf
    • https://uploads.strikinglycdn.com/files/23f831fd-bcb7-424f-bf39-a5d1da912264/how_to_take_apart_a_taurus_pt-22.pdf
    • https://uploads.strikinglycdn.com/files/68bb3bc0-6b73-4556-b2d4-a8a383c3c31c/macbeth_act_1_study_guide_answers.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_off00010281.bin
10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 2900 bytes
font_01_sfnt_off00010cc4.bin
a0652204b13c4c4e3a88f9e07b601d4d140086368739c6688a0787bac111c995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC4 4904 bytes
font_02_sfnt_off00011da2.bin
a431f33e20968a9c0ff87ad9e638899effc9b751d4b7f289123dd6cf8485f6d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA2 16236 bytes
font_03_sfnt_off00014f83.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F83 16204 bytes

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