Malicious PDF — malware analysis report

Static analysis result for SHA-256 4096aab3754a13ef…

MALICIOUS

PDF

83.1 KB Created: 2021-03-29 18:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32f0f573448bc27bf3479b7bcfd53c06 SHA-1: 2e8be043575591c776159dcbf18f7032ab2a13da SHA-256: 4096aab3754a13efc9ee120e3083a3057e06afa6d427c34f1d2b5c6c8ecc9234
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be the primary lure, disguised with text related to logo design services. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest it's designed to lead the user to a malicious site, likely for phishing or further malware delivery.

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://dafemum.ru/aws?utm_term=best+logo+design+company+in+india
    • http://dakijexok.22web.org/68946315549.pdf
    • http://ig-mediateam.net/buwimanemat5rn2j.pdf
    • https://cdn.sqhk.co/zapiseniw/jjihMie/corn_maze_iowa_haunted.pdf
    • http://xidotamasaw.22web.org/navojegis.pdf
    • http://segway-wheelchair.ru/muzikiwigamujutuwejupihap0.pdf
    • http://jiwapadenejeza.getenjoyment.net/al_quran_recitation_mp3_free_download.pdf
    • http://bella24.xyz/18016796652pq6ft.pdf
    • http://trastenmyqort.online/excel_vba_find_exact_string_in_cell1d4iq.pdf
    • https://cdn.sqhk.co/givogaduta/wB0dgeJ/dexemixamo.pdf
    • http://rcasino.info/jetil5ybgr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jojexapopexevof.epizy.com/nekafagolilexi.pdf
    • https://7e574f8b-ef34-4833-8dee-b18f3ac9fc91.filesusr.com/ugd/af8ffd_867e907be9324c80bfb3e4860d7cc69c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/68d64d80-9957-4b11-9c85-941440dc22d8/nolimixiji.pdf
    • http://wuselenefoz.rf.gd/os_evangelhos_apcrifos.pdf
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_9ea332282952491cba202fc7d458df2f.pdf?index=true
    • https://5e1449e8-5ae4-4a15-bc7a-ee23795bc964.filesusr.com/ugd/3a34a5_5f05b575ff7e41a48c95a3f9d1c9dd1a.pdf?index=true
    • https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_973b6201445c4e7e916e3341d5b7dcfb.pdf?index=true
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_0707d7d35bc7455f9d29ac90f3898f99.pdf?index=true
    • http://peruroz.onlinewebshop.net/sokal_biometry_download.pdf
    • https://uploads.strikinglycdn.com/files/108181b1-208c-4e8d-b20c-38b66607c3ad/shatter_me_age_rating_common_sense_media.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f969.bin
e47f55af7442673c793ae715b30b244e26a14cd1f05c8d7eceef9cb9ccc424d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF969 5236 bytes
font_01_sfnt_off00010b29.bin
81eaf12dede2b88f8e3f9a730cad7dffbe43531e0f1f1d78305ee9a805191c57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B29 11036 bytes
font_02_sfnt_off00013073.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13073 4324 bytes

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