Malicious PDF — malware analysis report

Static analysis result for SHA-256 774e321e3347a039…

MALICIOUS

PDF

70.4 KB Created: 2021-01-17 20:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a9e354f8c7c84682d9f7dd82154b840f SHA-1: 420c7b6d39d66359d5c1a05235fb48c6e93da57e SHA-256: 774e321e3347a039bffdba7ec24184baa950ea8c684542e535610fa53cae3263
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used to redirect users to a phishing site. The presence of multiple obfuscated URLs suggests a campaign distributing malicious documents to lure victims to potentially harmful content.

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://trafffe.ru/wb?keyword=resident%20portal%20the%20standard%20fort%20collins PDF link annotation
    • https://cdn.sqhk.co/vopovaroxamo/jcCjeid/fetaxusabebene.pdfIn PDF document text
    • https://cdn.sqhk.co/denobafopum/ggilHgd/omron_blood_pressure_cuff_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369788/normal_5fc76f0f366e8.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/ajjgpji/download_realpolitiks_mobile_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/gdihLja/1456913989.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/lb4jgaB/vuvutujanimajofixuga.pdfIn PDF document text
    • https://cdn.sqhk.co/xonoguduzob/chjxvih/misupuf.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwufeguv/X9jhQgL/85501489149.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/hOdljbW/fundamental_theorem_of_calculus_definite_integral.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/ehagfhe/light_blue_viruses_dr_mario_world.pdfIn PDF document text
    • https://cdn.sqhk.co/kevemelis/a5rhdha/slimeatory_game_slimes.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/dhiifs3/rts_tactical_armor_bundle.pdfIn PDF document text
    • https://cdn.sqhk.co/xaloridinef/NgjaPji/snowflake_drawing_simple.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385214/normal_5fa60ab178f66.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/patotale/19621270542.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/audio_visual_media_definition.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_off0000d6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AC 5248 bytes
SHA-256: d052a0a690cea235978e00b3d8970d7be5c134cc86eee13c73f02a5910e50151
font_01_sfnt_off0000e883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE883 9944 bytes
SHA-256: a657f6a90a74241067751bdd33f5e919eec5cca97a96845589350d1fa0d0fd4d

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