Malicious PDF — malware analysis report

Static analysis result for SHA-256 2867761913d20851…

MALICIOUS

PDF

79.8 KB Created: 2021-01-10 05:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7942abd8ad6c729328aeaab626164665 SHA-1: 3ed33c841bcf21cb6a8f3830e35a386d60e4381e SHA-256: 2867761913d20851bdad21f73cb99cf0dd4cc277b1aa856862bca430876598f9
154 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 'traffmen.ru'. This URL is presented in the document body, suggesting a phishing attempt to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/wb?keyword=last%20minute%20hotel%20deals%20ireland%20this%20week In PDF document text
    • https://cdn.sqhk.co/sebazisop/iLPtjdQ/free_rock_ringtones_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vilomikov/0ieif3t/4451186360.pdfIn PDF document text
    • https://site-1176294.mozfiles.com/files/1176294/pixal_ninjago_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/vonixilavot/hbJibhj/93333411540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/domegagowevag/pc_brightness_control_software.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/desovopimufilusutuvawali.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/camera_preview_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/triangle_screwdriver_set.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/ozark_trail_10x10_canopy.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/vopuzojajawagenejedexo.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/10138534991.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/fox_sports_tv_guide_app.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1B 5044 bytes
SHA-256: bec00d5dfdf4058876229d4c1111525ec1fbb74a774cde51effe27d8a2f09814
font_01_sfnt_off0000fd19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD19 11560 bytes
SHA-256: cfb2268f62c17b246d8ee87ebf60d0dcf415f4c716edcedb7ccc93509a3400eb
font_02_sfnt_off00012424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12424 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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