PDF malware analysis — malicious · dbc8430f893f8822

MALICIOUS

PDF

76.4 KB Created: 2021-03-18 08:24:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 12acfff775fc10dc314b0c288f792d03 SHA-1: dd5663698a8c728ea12c2c88de1700e3fe918f35 SHA-256: dbc8430f893f88229420a11ca6595a4a8c08f279c3799784119d2770d6f21246

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, and contains an embedded URL that leads to a suspicious domain. The document body, though partially corrupted, suggests a lure related to an 'answer key', aligning with phishing tactics. The presence of embedded URLs and the overall detection indicate a phishing attempt designed to redirect users to a malicious site.

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://pelibifir.ru/wix?keyword=complex+inheritance+patterns+worksheet+answer+key
- https://nerapusu.weebly.com/uploads/1/3/1/4/131438180/373202.pdf
- http://mibilivo.scienceontheweb.net/1001_books_to_read_before_you_die_2020.pdf
- http://gasolotiravizid.sportsontheweb.net/37574567904.pdf
- https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/kigesimuwuze-vefikelawavaji.pdf
- https://zoradelageruwol.weebly.com/uploads/1/3/4/5/134591251/9884957.pdf
- https://tunoritusaw.weebly.com/uploads/1/3/5/3/135328070/d84070ced269.pdf
- https://datagoso.weebly.com/uploads/1/3/4/7/134718767/jotatofa.pdf
- http://joweponula.mywebcommunity.org/81428467062.pdf
- https://tefakunuti.weebly.com/uploads/1/3/1/8/131871494/zozodosuxosaguk.pdf
- https://tusuwijajibu.weebly.com/uploads/1/3/4/5/134517525/fazutelesadug_debeb.pdf
- https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/lakosupoxazulev.pdf
- http://borejukeluteva.mygamesonline.org/the_whole_bee_movie_script.pdf
- http://dabutaxezopis.iblogger.org/istanbul_not_constantinople_sheet_music_violin.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://jajijewanetu.epizy.com/abstract_algebra_dummit_solutions.pdf
- http://wabalegawamiraj.rf.gd/bm_sharma_physics_jee_main.pdf
- http://zazezinokigane.epizy.com/46458984265.pdf
- http://memokikadu.rf.gd/61278147222.pdf
- http://gagolabirej.atwebpages.com/cuestionarios_ser_bachiller_2020.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eef6.bin` `05cea1a894e97ed49934abc24e8bd012df3530b50b245b85c8cdda40f6210a1f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEF6	5404 bytes
`font_01_sfnt_off0001013d.bin` `a9fd0ec2db53998072c0e95a3d693fe43eb8a59e2a0f4da915603750a8f19df3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1013D	10232 bytes

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