Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdad4e39a5c04c82…

MALICIOUS

PDF

84.8 KB Created: 2021-03-10 10:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 82b8720ce7449b6a2d68e45269dfe0ca SHA-1: f7191350bc1a37106bc28bf6c84afc647c9567e8 SHA-256: bdad4e39a5c04c82e382f53d51f7db6dcf62c4f616cf8c51b4054c490e276585
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'riding mower' information, which is a common tactic for phishing or scam campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/aws?utm_term=best+riding+mower+for+1+acre+yard PDF link annotation
    • http://salonhq.xyz/66476785041mlub2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484118/normal_6021783be43e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487662/normal_5fe49b426a5b7.pdfIn PDF document text
    • http://visatog.22web.org/invoice_paid_template.pdfIn PDF document text
    • http://activa-fb.com/air_brake_system_report9fx97.pdfIn PDF document text
    • http://fakoximalaze.22web.org/oxford_dictionary_free.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/navoburarovada/anth_movie_songs_free.pdfIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_62147379049d4b0f81f21d7ea4b0bf73.pdf?index=trueIn PDF document text
    • http://wevedikelu.epizy.com/ralazadinuvazimumu.pdfIn PDF document text
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_57a0219eab15475ca46b8153987ce033.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/malulewadob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd29de1-8ba5-485a-8d92-ba57780ac409/dijukurogufijotukog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7420cba4-b1ba-48c1-b6fb-5845c8283a04/does_food_grade_hydrogen_peroxide_expire.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/surf_report_oahu_north_shore_today.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/41636441180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc50e27-99ef-4efe-9a6c-fd674044c866/how_much_oil_does_a_predator_8750_generator_hold.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60a1a84c-8794-4da6-9015-670773bf6d9a/67732983308.pdfIn PDF document text
    • https://6b137298-3864-41c5-aaa3-11744000c3c2.filesusr.com/ugd/b916f4_4401efbb6aa54478a444e3cb251aaf6a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/cadd_prizm_pump_instructions_video.pdfIn PDF document text
    • http://babematalal.epizy.com/63937962529.pdfIn PDF document text
    • https://f3874c2d-c116-49c2-b7b6-9300dc8fc43e.filesusr.com/ugd/b11f6d_c16466178dc14959ad6ab07ef2cc5ac7.pdf?index=trueIn 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_off00010cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFD 5604 bytes
SHA-256: 68240a0d29e1ed76310086a12d78b8c6b1d6739c37cd2cde6c45ddeb224bf58f
font_01_sfnt_off00012017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12017 11184 bytes
SHA-256: b875b0def4c9f944176a493a2e01950f40ca1d3aa800629d126ff45ffed1b686

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