Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f17b6ec2ccaf7f…

MALICIOUS

PDF

80.9 KB Created: 2021-03-06 00:30:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 006054b14055c4fba2a80dfb9657d5fb SHA-1: 70acb4e238ce6cb888d3c62741b91fae510f4f9a SHA-256: a1f17b6ec2ccaf7fe685987dfa2b1ffe48d25368bacdd434e91a511ae0171679
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware delivery. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a phishing lure.

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://xezojetit.ru/wix?keyword=psvue.com+activate+roku PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5ff48f58e8e29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366377/normal_5fcd73e0e7a8f.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/1AhcibP/61934418258.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_60201ef775651.pdfIn PDF document text
    • https://cdn.sqhk.co/marezotije/dhixhj5/bass_boosted_3d_song_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nogugojuri/Gjgigjc/disaster_alert_app_philippines.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/9jqK2xG/36908942577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450624/normal_603636aa9b202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_6010c79175a92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401694/normal_5fe69cf7ea81a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5ff4cb28c1239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453907/normal_603823233486d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409623/normal_6017aba6dd14f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a60daa9-5cf0-4740-a8be-d76fe16eebe3/bodilag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa93bff8-1c99-44d1-af7b-aabfdf20bc42/excellence_riviera_cancun_puerto_morelos.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/where_can_i_watch_all_the_lord_of_the_rings_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/33806400661.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/kitab_al_arabiyah_linnasyiin_jilid_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d20eb68d-b148-46c9-b474-77200c04ba67/how_to_valid_aadhaar_signature.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_off00010101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10101 5072 bytes
SHA-256: 67595f1ab7f435d128ff9c18dc3dc671ba71c49bb1d4b3285010e60d96d0ab3d
font_01_sfnt_off00011237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11237 10596 bytes
SHA-256: df956c6629c095d018fcc992adc74497ad7298f44d847baf476657441006863a

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