Malicious PDF — malware analysis report

Static analysis result for SHA-256 de32a7949f3ea27f…

MALICIOUS

PDF

81.8 KB Created: 2021-02-25 04:27:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 0ee2cd329fff9945c625217b5ef7799e SHA-1: f1147433c53a21993a5fb0b9d0786974dc3b9e82 SHA-256: de32a7949f3ea27faa231ab05455dea498fabff9b4f5cce1bc87b65f075157d2
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a visual download button and embedded URLs suggests a phishing or social engineering attack aimed at tricking the user into downloading a payload. The primary URL, https://jottigo.ru/wix?keyword=grizzly+mill+parts, is likely the distribution point for this payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/wix?keyword=grizzly+mill+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4493920/normal_602954a0498b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476123/normal_5fe26c5e38c01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481665/normal_5ff395f4e32ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402503/normal_5fdeeb04a5503.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/zKBgdhg/teremogotutamiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370319/normal_5fef02d20590f.pdfIn PDF document text
    • http://riwuveroxuwox.66ghz.com/relationship_reasoning_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/rotexopapi/cshgjee/fury_mode_dead_island.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_600aa9936b720.pdfIn PDF document text
    • https://cdn.sqhk.co/zesozote/hiivjjJ/spongebob_game_frenzy_free_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367286/normal_6003c6c17c82a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423427/normal_5fe95a753dd4a.pdfIn PDF document text
    • https://cdn.sqhk.co/velijituma/XgehicS/77490401852.pdfIn PDF document text
    • https://cdn.sqhk.co/revipidamog/iF0hbid/sakura_blade_2_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jexibejeses.epizy.com/cbt_for_health_anxiety_manual.pdfIn PDF document text
    • http://rimojiruseb.rf.gd/how_many_numbers_are_in_a_nc_drivers_license.pdfIn PDF document text
    • http://pinakebe.rf.gd/2665917399.pdfIn PDF document text
    • http://finesegugumemo.epizy.com/emotional_development_in_physical_education.pdfIn PDF document text
    • http://magotabitujotu.rf.gd/nosakokoxafodapipig.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C1 5148 bytes
SHA-256: 94fbea43222706d8d3e8717519a57fa857a98605591a1e227cf873a813f21920
font_01_sfnt_off0001133c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1133C 11572 bytes
SHA-256: 2e6a24eebe85194eb70821851067273c5db6568757ff7d1d962c6564117cfc9c

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