Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc978b0db45e6535…

MALICIOUS

PDF

76.1 KB Created: 2021-01-06 02:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4a331cb1c0210cdbb9657b8d55b1727d SHA-1: ee5696fdf8902f0c3fa2d0bc5e85e276da7b76fa SHA-256: dc978b0db45e653598d1bd59587215c3380409275585abff181562d07a666a0b
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for malicious redirector links, pointing to 'gettraff.ru'. It also exhibits characteristics of a PDF link farm, with numerous external links, including one to 's3.amazonaws.com/jedaxopopuko/riwupamagigotuwofuvavakul.pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/aws?utm_term=babel+novel+apk In PDF document text
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/fanixilatelef_powegiroxa.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/9972079.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/jedaxopopuko/riwupamagigotuwofuvavakul.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/sea_of_thieves_cursed_sails_campaign_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/gorisutoti.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/reflection_of_light_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/wegezujomurifoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/employee_incident_report_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/60055064214.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/lego_harry_potter_5-7_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/bleacher_report_mma_picks.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/5166439481.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/27226239709.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD742 4512 bytes
SHA-256: 1fdcddf6c93bae56cd03f61a918b902aee12ef7f11d0ec05c2ee73a2f3a756da
font_01_sfnt_off0000e699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE699 1936 bytes
SHA-256: 73983ccd477f0e4c07634362c0f9f13a23cea415a26bff37f7f125d59a681190
font_02_sfnt_off0000efdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDC 11204 bytes
SHA-256: cf8d0a709c9ec61df24c233a91a29b09d8108cd5f9b35334c173307308bd9576
font_03_sfnt_off00011571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11571 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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