Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86824f91092c385…

MALICIOUS

PDF

76.4 KB Created: 2020-11-24 05:18:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d051d7de8ff89965e8cb73ae9e3c5263 SHA-1: c3e55c62d948f01ed3fa4c5dcb60d5166f6fc637 SHA-256: e86824f91092c385fcf799de150f06079b097c826d19ffb9a82a21c60f3fb735
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by both ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, suggesting a tactic to drive traffic to other sites. The embedded URL 'https://trafficel.ru/123?utm_term=neocutis+lumiere+bio-restorative+eye+cream+australia' is a primary indicator of this activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?utm_term=neocutis+lumiere+bio-restorative+eye+cream+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f9023ef672ed.pdfIn PDF document text
    • https://jagamasukibo.weebly.com/uploads/1/3/4/4/134493784/a206cb3.pdfIn PDF document text
    • https://lidovoji.weebly.com/uploads/1/3/4/3/134313359/losikolavudilibumoke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404739/normal_5f99c4b5af453.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/jimugivos/gevorilaviki.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/herbalism_leveling_guide_classic_wow.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/altar_servers_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/cctv_camera_ka_full_form_kya_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/applied_spectroscopy_author_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/1750424742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f1fc5c-af9d-4a14-86ab-150eaabe04aa/8454699198.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/60176945791.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/ashampoo_windows_optimizer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/gikeremoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/gripfill_adhesive_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/ruxaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/144759d6-e7d4-403b-b578-692c8a06794f/vopumofogutolew.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_off0000ee32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE32 5248 bytes
SHA-256: db4788f90915fdefeb9808e2b33b20cafae32120e60a442654dc33b9f3994e4b
font_01_sfnt_off0001000d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000D 10632 bytes
SHA-256: 77976850780b9e8d49aa27c10900b24f921f3a5b97e97519efe89bb7fc6f0b13

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