Malicious PDF — malware analysis report

Static analysis result for SHA-256 432cbec52ffe3774…

MALICIOUS

PDF

97.7 KB Created: 2020-11-17 09:23:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 76194243c524bc9ee75bcdc8106ba789 SHA-1: 34f0925aed8b83196918e152f6339d599eb9bfb5 SHA-256: 432cbec52ffe37740e8d3633ea5f921e0f44be0f210e89791c8fcf7da80fbcfb
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to reference a printer manual, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/123?utm_term=samsung+xpress+m2070fw+manual PDF link annotation
    • https://gavawujag.weebly.com/uploads/1/3/4/3/134370084/gemukoduben.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f9cd2dd5c06c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fa85adc7c774.pdfIn PDF document text
    • https://vefozifus.weebly.com/uploads/1/3/4/3/134382693/zijosifawexemetokel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bewibiwat/broly_power_level_compared_to_goku.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/candy_movies_from_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0bf30bb-eb1c-4d70-8e95-2a569da281f1/64768557188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7771e0-5375-4cf8-9ebc-63dc46186957/birth_certificate_number_for_i9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2614ab00-ad01-4f1a-88cd-04dd4c1b78ae/xakor.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/wusaladen.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/mowekurojoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/498f3bbe-c8af-4daa-83dc-3330ec22600a/f1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa979f07-e22c-490d-b5cd-3c804b9d0725/taxoraleditumilugepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4622d1c-8efa-4b1f-8372-a5e3fff8336d/xonakemopuxaworotafo.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/ball_of_whacks_puzzle.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00013627.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13627 29784 bytes
SHA-256: 59e8c6a92418251e78eca6323f96e86862e89473e757780684cd89ab59e40299
font_00_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 3724 bytes
SHA-256: b64350c7bbdab9a8dc064f21a0594747627629593141b2bb6cd02da97e11ebda
font_01_sfnt_off0000fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1E 5480 bytes
SHA-256: 0fc5d19016a23f847c900e3ed9c8a8237c170d3b4473b027f22b868f92083f84
font_02_sfnt_off00010dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBD 12732 bytes
SHA-256: 3e7e78b182ec5f375bf355f75ed426224dbf311e8200b5f66f72d381b3906185
font_04_sfnt_off00016aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AED 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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