Malicious PDF — malware analysis report

Static analysis result for SHA-256 d787d590f572a77b…

MALICIOUS

PDF

66.3 KB Created: 2021-03-14 15:33:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a1b0987f278d49579e8e3d5a0e09b46 SHA-1: 2407ee53bd006ea12646f16572730e7c381f1785 SHA-256: d787d590f572a77b753415c1094c7311aabeeb3c40d17b949fc872e5e0542820
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a lure for downloading software, specifically mentioning 'minecraft pe 17 apk appvn'. This, combined with ML and ClamAV detections, strongly suggests a phishing or scamming attempt. The presence of PDF-specific heuristics and embedded URLs indicates the document's malicious intent to redirect users to external 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://zajinet.ru/wix?keyword=minecraft+pe+17+apk+appvn
    • https://static.s123-cdn-static.com/uploads/4384822/normal_5ff2cfd2ce67f.pdf
    • https://cdn-cms.f-static.net/uploads/4489415/normal_6025b263e6f60.pdf
    • https://cdn.sqhk.co/pujixefan/ecp2TO3/83222576678.pdf
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fcb5a9726973.pdf
    • https://static.s123-cdn-static.com/uploads/4377697/normal_5fec165e23073.pdf
    • https://cdn.sqhk.co/vulovosovem/jhjbMje/past_future_mp3_song_download_pagalworld.pdf
    • https://cdn-cms.f-static.net/uploads/4470967/normal_5fd66582e2309.pdf
    • https://cdn-cms.f-static.net/uploads/4373987/normal_5fd63aa662422.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_e042a1e9ab864502b1824c4c193035dd.pdf?index=true
    • https://s3.amazonaws.com/xipavir/7339143610.pdf
    • https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_7725c5258b0e4ec3bdb763093e414467.pdf?index=true
    • https://s3.amazonaws.com/zifilobesumafi/nizozadopatadifogewireni.pdf
    • https://uploads.strikinglycdn.com/files/56914a36-81b7-4327-b8dc-e1502d74c97b/nokijilabufoluxawuwade.pdf
    • https://uploads.strikinglycdn.com/files/2efe4e5f-4c8f-4f84-95b5-a696656962eb/figikiloligedojovabijen.pdf
    • https://s3.amazonaws.com/xoguwavosuje/xusaxizamida.pdf
    • https://b00f38ea-0d13-4519-ab0f-1253f0d03ca0.filesusr.com/ugd/289c5e_bf0b58b6ae414fc1b9483c47e87bf18a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/58116493-cdc8-4b7a-b869-b188b23b8309/bissell_powerlifter_powerbrush.pdf
    • https://s3.amazonaws.com/topipovikapari/hero_movie_bansuri_ringtone_remix.pdf
    • https://2c8134a4-d865-4da1-8961-c755d7242105.filesusr.com/ugd/6dcf04_28d6b3d81eef4f55af12bdaa30944de3.pdf?index=true
    • https://s3.amazonaws.com/xupizewuxere/python_list_comprehension_multiply_two_lists.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8b3.bin
c9ca8ba18185cd6ed2d149823195258fa6f33053a273953ce88209b447550c63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B3 5060 bytes
font_01_sfnt_off0000da22.bin
d3cb6aaebca5de735bcb95030bb3ceb2c4b99acccfd98e9eeea031d21e157ea0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA22 10008 bytes

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