Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8dc26feced0a767…

MALICIOUS

PDF

104.0 KB Created: 2021-03-24 00:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 624e9032f55e3ad8b67a0e69a3afa934 SHA-1: dadbb3d9e7ece7ad902b4d49d8dbbfd821b6887f SHA-256: e8dc26feced0a767dc9438788f0b249d8ab97d768369020b7e3bafb7499f27ee
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and contains multiple embedded URLs. One of these URLs, 'https://ponafet.ru/award?keyword=biomasse+energie+renouvelable+pdf', is directly referenced in the document's text and appears to be the primary lure. The presence of PDF_URI and SE_LOLBIN_RUN_COMMAND heuristics further supports the malicious intent of directing users to external resources. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://ponafet.ru/award?keyword=biomasse+energie+renouvelable+pdf
    • https://zefemebok.weebly.com/uploads/1/3/0/7/130775969/lenitenoji.pdf
    • https://xizuxikeg.weebly.com/uploads/1/3/0/7/130740292/bilazegefebafozuwame.pdf
    • https://basalusorur.weebly.com/uploads/1/3/4/6/134661810/woxafokuzuzusefif.pdf
    • http://zipibafof.iblogger.org/rowabewuduzoditugupedi.pdf
    • http://sanatoriy-izumrudny.ru/nezejajujegoxiw88jwf.pdf
    • https://rogosibaf.weebly.com/uploads/1/3/4/5/134590501/5604989.pdf
    • http://christmas-gift.ru/1984_niv_study_bible_online9u7jq.pdf
    • http://vulolituduja.iblogger.org/the_giver_chapter_15_quotes.pdf
    • http://startask.ru/loxolekorobic7ukq.pdf
    • https://gisetokitalakak.weebly.com/uploads/1/3/4/6/134600310/ruwowepidike.pdf
    • http://fb-ig-violation.com/badosonogenosedked.pdf
    • https://xizuxikeg.weebly.com/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vixuwogetiv/xufoz.pdf
    • https://s3.amazonaws.com/resisuna/curling_wand_size_guide_mm.pdf
    • http://tekunobujolid.epizy.com/graphic_design_app_for_free.pdf
    • https://uploads.strikinglycdn.com/files/911db2aa-b530-484f-b726-47be77ce33c5/tevipafexepubofuko.pdf
    • https://s3.amazonaws.com/wujixus/kodedasejanexunewej.pdf
    • https://uploads.strikinglycdn.com/files/0419fed4-46d1-45f5-9eb1-459333758aa9/73254278472.pdf
    • https://uploads.strikinglycdn.com/files/776f952f-288c-40a1-b2be-5cfba630a896/hobart_model_1612p.pdf
    • https://s3.amazonaws.com/vipinib/chaiyya_chaiyya_dj_remix_song.pdf
    • http://pinopog.rf.gd/8282597251.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_off0001533d.bin
0546c612d3b9688c6ea4f92355dc1d157c1985c478df566b92bb8e45caeafbdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1533D 5608 bytes
font_01_sfnt_off00016639.bin
b6780d93a11b6337dc2fe1a8e0411b3b909f9d2533d6a7d6def49aa514fa5d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16639 13504 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.