Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6f1c9106f885d0…

MALICIOUS

PDF

72.6 KB Created: 2021-03-03 13:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ff211cb28b14f69f0601fc2df8d5cbda SHA-1: 2733e559e41852738a4185958b6fa0cd270f54e5 SHA-256: 9a6f1c9106f885d07e6330bddd9fd13fcb89b2c0048dd79e9bd17ae44f63ad95
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that redirects to a known malicious domain, likely intended to phish users or deliver a secondary payload. The document body, though heavily obfuscated, appears to mimic search result content to trick users into clicking the malicious link.

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
  • 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.
  • 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://yafferge.ru/wb?keyword=star%20trek%202009%20movie%20scenes In PDF document text
    • http://covid-19online.site/solaris_united_rank_up_reward3lenx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459329/normal_602f16c07dcc9.pdfIn PDF document text
    • http://xiruzox.mygamesonline.org/ms_excel_practical_exercise_questions.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/witox.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/what_does_genesis_chapter_6_mean.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449395/normal_5fca996036eb4.pdfIn PDF document text
    • http://xevamoz.mygamesonline.org/21482495657.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/bowazefetexu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5fc9e24f68c57.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/ciclo_de_krebs_resumen_paso_a_paso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385847/normal_5fece8d5c2b65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_6016b6cbab734.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/wifukedot/ikea_malm_bed_frame_second_hand.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/4838896604.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/vowemopomapuwufonokosimag.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/rowexunedijikajejirobinuf.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/avengers_end_game_trailer_3gp.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_off0000df36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF36 5572 bytes
SHA-256: e685c4029ac9fb1c8b1326098876f3c629e6db108474caf7a57e8ef106d35a29
font_01_sfnt_off0000f215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF215 10364 bytes
SHA-256: 2dd6f4f04de9e6e6e3a92c5d7ea696bc1fc07bc4f9ca248fef6d8aafb459d6f8

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