Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d666e08dc35b5ee…

MALICIOUS

PDF

306.8 KB Created: 2021-03-22 03:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 89f1d9677446f065f5b677c23151eefe SHA-1: 2232f0f6268a8e9ef469967bdfb4441cfc9f0778 SHA-256: 1d666e08dc35b5eeb1deba3e3be7b478641d89361853cd1bf6fdad48bd839d6f
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, dafemum.ru, which is disguised as a 'deduction guide book pdf'. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection further support its malicious nature. The presence of embedded URLs and the urgency lure suggest a phishing attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8760

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/wix?keyword=the+deduction+guide+book+pdf In PDF document text
    • https://cdn.sqhk.co/tamejenonisi/Ciggdjb/migaboleb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5fee1bb5a55d4.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/zieJeee/12954486953.pdfIn PDF document text
    • https://cdn.sqhk.co/gerukoso/mge1nqf/summoners_war_rune_optimizer_pro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412588/normal_603ded0a808e1.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/jamabasuvisigamipapuq.pdfIn PDF document text
    • http://healingtunes.ru/jisofjtsuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408864/normal_6051605e01b87.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/gKnX4ie/digomupuzadure.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/i2jfAtY/82000419598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_603f189068637.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/cTLRgiW/music_rock_and_roll_racing.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/ehizRjg/dimuditepapavuk.pdfIn PDF document text
    • http://fitnesspack.net/jidewuxaxatenutufotemu0a965.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/jbjduhf/93208827745.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/jgidia0/rv_trailer_parts_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_603e9c6ee96b9.pdfIn PDF document text
    • http://snapchat-alert.com/bindiya_bole_kya_bole_songgdtx1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476593/normal_5fe68ede63804.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/bulalowisu/fewodagosibijufumu.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/towizowemaduson.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/juveginoriragozo.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/gidorelufosilod.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/35370162757.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000448d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x448D1 5056 bytes
SHA-256: e22844a0ce311b2e62a8c4a7dbf06cf4adcaf805b6f2579ab8b9459381aa0962
font_01_sfnt_off00045a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45A03 7536 bytes
SHA-256: 5253cf9acb70db3c5894ff22f4c4fb4eb7a20d201880daeaa87e7a658e900424
font_02_sfnt_off000473a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x473A7 13452 bytes
SHA-256: 9813d0ad91d33ef50f13ab598ac9682f73acfe4c7f872e1271e9cc08fa5f68dc
font_03_sfnt_off0004a0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0E4 17052 bytes
SHA-256: ae3c87104a3bb0d0d8b8c6551fdf9fc110740181388363992fe4f3db04875ff1

Open this report in the interactive analyzer, or submit your own file for analysis.