PDF malware analysis — malicious · 34fe3b8ef7c0679f

MALICIOUS

PDF

72.6 KB Created: 2021-03-25 05:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20

MD5: 00cef30ab14c6e8ed3c0b3b9e6d63b51 SHA-1: 5bce43e32fa5d58e53cec42a1117595f073b7cb0 SHA-256: 34fe3b8ef7c0679f2179618966cd96d22ae633cdbc51d6b110764ba955e6073b

126 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 numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting an attempt to obscure the final malicious destination. The document body, though heavily obfuscated, appears to be a lure related to online training programs.

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
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://jewezuwexokuj.weebly.com/uploads/1/3/4/7/134717424/nizabegepiluv-nigokovujuwo-sasuvim-pewaluwa.pdf In PDF document text
- https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/bezefuliwokona_dupazabivix_tuturapudaduxaj.pdfIn PDF document text
- https://supagerafigi.weebly.com/uploads/1/3/0/8/130874211/6a54aa8e99a034.pdfIn PDF document text
- http://future-techno.ru/mechanical_engineering_internships_vancouver_wa9vdyf.pdfIn PDF document text
- http://look-hotel.com/certificado_medico_iess7caz4.pdfIn PDF document text
- http://prosale.company/tapatom93pj7.pdfIn PDF document text
- https://lozezuxugi.weebly.com/uploads/1/3/4/0/134016676/turoferixo.pdfIn PDF document text
- https://tapizijivuvol.weebly.com/uploads/1/3/2/6/132696465/8a00bbc7fa87.pdfIn PDF document text
- http://alisabor.design/77721540233zcuye.pdfIn PDF document text
- https://radisowe.weebly.com/uploads/1/3/4/3/134366404/bc58c840551.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://feedproxy.google.com/~r/wb/ENAH/~3/n4t4wXRn-MA/wb?keyword=best%20online%20athletic%20training%20programsPDF link annotation
- https://uploads.strikinglycdn.com/files/a4f0bc3d-ac72-4f73-a505-907d74b871fc/26796210595.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1b262ab6-c9fc-4544-ad5c-25f8b26a506d/jakezaxesot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5066456b-96b6-41a7-a978-679c83db17ad/minolta_maxxum_7000_instruction_manual.pdfIn PDF document text
- https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_0f34548386db467bb2dd1ed1acd68422.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/53caa214-0487-403a-a059-c170b0fa9f0f/weber_kettle_grills_near_me.pdfIn PDF document text
- https://2080fafa-2491-4ac3-8118-a138f33bff34.filesusr.com/ugd/822ecd_e4401e1fc92d46e989782ae4e5384d5f.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c32e81de-d540-4622-8afe-3be03a6777c8/what_can_i_eat_on_a_gluten_free_diet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5966b96a-b3fe-4662-965e-6ef959c95317/present_continuous_tense_worksheets_for_grade_6.pdfIn PDF document text
- https://d4e73f68-9870-4c81-be0c-0a6dd7607cd2.filesusr.com/ugd/6f53d7_fd8232cb9f2246dd989608a362d5ea1d.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d06d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD06D	5184 bytes
SHA-256: `304af918ae31ea74ad12e815b6b22af050cd904397f997ec0c5b07d766d4b2e7`
`font_01_sfnt_off0000e1d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1D5	10340 bytes
SHA-256: `372e9e1b9b97ec5b96482f7b004646503b0601cdf1bc0ec01f8e1e653d510d55`
`font_02_sfnt_off00010552.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10552	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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