Malicious PDF — malware analysis report

Static analysis result for SHA-256 022087120ab787dc…

MALICIOUS

PDF

78.0 KB Created: 2021-03-03 10:52:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f50964d004d34adfea345696fad3e812 SHA-1: 14133118aba079daee4ecfeda39aa32507b4b73e SHA-256: 022087120ab787dcc39361aa403291752b38fcc323aee9dff333af6c2cfbd0e3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/123?utm_term=windows+10+boot+process+step+by+step+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454179/normal_6031e97006448.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450037/normal_6009ed244188a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482403/normal_600357e6c7bc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_6012dbdcbb6a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469375/normal_5fe80af4279f6.pdfIn PDF document text
    • http://kibizife.iblogger.org/1176695431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600f906f55533.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454182/normal_60055d09ddf40.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/widuxade/9194899606.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/armor_of_god_scripture_esv.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/potubawa.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/xevuzutitolutajonerudoz.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/bts_ly_her_full_album.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/drinking_water_guidelines_epa.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/sscnr._net._in_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/beyond_biocentrism_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/airpods_automatic_ear_detection_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/photosynthesis_worksheet_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/48803171864.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_off0000f24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24B 5448 bytes
SHA-256: 4191777235c7074acf3e94a0d0296163d0dd0d1d60cd8fe7a4f06ec8622f33c6
font_01_sfnt_off00010507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10507 11044 bytes
SHA-256: 7ad2da7d98621c9589b855e56cc0fc70c3142b81ea53ee4cca8b2f1dcad42487

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