Malicious PDF — malware analysis report

Static analysis result for SHA-256 0faeb9b8f598205f…

MALICIOUS

PDF

75.2 KB Created: 2021-01-03 02:32:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 4f6b3ee799ef51e01aa109c9ed45bcf9 SHA-1: 759cd365a4369bafa1870629b0a90f0da1abd7fc SHA-256: 0faeb9b8f598205f7277e5a848ab35544213820cc179e4bd2ae1f1e688266b06
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru/aws?utm_term=banner+saga+apk+obb'. This, combined with a visual download button lure and a high ML classifier score, strongly suggests a phishing attempt to trick the user into downloading malware. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'.

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
  • 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.
  • 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
  • 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://ggtraff.ru/aws?utm_term=banner+saga+apk+obb In PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/tabis_vokuvep.pdfIn PDF document text
    • https://jodejivosarixu.weebly.com/uploads/1/3/4/3/134314211/toboxu.pdfIn PDF document text
    • https://sekulawovow.weebly.com/uploads/1/3/4/5/134578441/493898.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/jjhihan/lejuferofi.pdfIn PDF document text
    • https://nefarixutasirov.weebly.com/uploads/1/3/1/6/131606035/9692f9785dcb7c6.pdfIn PDF document text
    • https://xadaxiwunitari.weebly.com/uploads/1/3/0/8/130814235/garivugobit-zenorini.pdfIn PDF document text
    • https://kikebepuziji.weebly.com/uploads/1/3/0/7/130775256/xidekapupen.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/metubevozisul/scerts_assessment_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/rekepotofituxajelas.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/gadapije.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/internet_explorer_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/attention_to_detail_test_example.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/ldc_2018_answer_key_lakshya.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/kinh_cam_on_sau_ruoc_le.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_off0000e818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE818 5208 bytes
SHA-256: 2b8172b9d0f25adfccfe8b4e9be66924db7a23debe97665f65465404ff452f10
font_01_sfnt_off0000f9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E1 11900 bytes
SHA-256: 5fc79fefe7d4892d13231bb5388d560e596cb514ebe3cc4b9d115ae3210a3275

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