Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cdc6db5a0b97856…

MALICIOUS

PDF

64.5 KB Created: 2021-01-11 22:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b083c24e1ba3de054e440f70afe4b338 SHA-1: 9999de2c05fb4d8e650bfc9b2bb5a9de4a428aeb SHA-256: 4cdc6db5a0b97856fcfbfcdce6d3c4d2bd0ef2181910301884ed6f96165f99de
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, and the document body, though heavily obfuscated, suggests a lure for a 'free movie download'. The presence of external URIs and the overall detection suggest this PDF is designed to trick users into visiting a malicious site.

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
  • 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://trafftec.ru/aws?utm_term=dredd+full+movie+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451375/normal_5fd114d99c371.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hHhbje5/xegixutuzukitoga.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/pjiauv3/nezenonunafuzer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405642/normal_5fdd2699a94e6.pdfIn PDF document text
    • https://cdn.sqhk.co/zapakolozu/jffjjih/in_truck_driving_games_highway_roads_and_tracks.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/d1ibNdr/nails_for_you_glendale.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/DdCifhd/moto_camera_tuner_apk.pdfIn PDF document text
    • https://site-1167926.mozfiles.com/files/1167926/65792160227.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/Ehghc4u/fokoxozos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_5fd897141c834.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/jitBibN/poxemel.pdfIn PDF document text
    • https://site-1191779.mozfiles.com/files/1191779/the_lightning_field_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/luvuxokam/hdr2ieF/rush_up_ninja_dash_climbing.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c0a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A0 4724 bytes
SHA-256: 3d85242c1f02e779659ba651276ce612741c89971987a3b27208f45e3f89adf9
font_01_sfnt_off0000d0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A7 10656 bytes
SHA-256: f8108846bb8aaf29a47c472dc2227297ab51595c04b82ee3e7e737a3bb7d78e3