PDF malware analysis — malicious · 0790abce41a35484

MALICIOUS

PDF

78.5 KB Created: 2021-03-22 06:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: adc01fded4018d5a496ba40bbe7d71be SHA-1: e3876754471454bcd7c1b340efbc044caca30a15 SHA-256: 0790abce41a35484547d018c81bad80f715a7f5ab5868a3ffe7b4bbb7ad8bf07

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, with a prominent one pointing to 'ponafet.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for such lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9964

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://ponafet.ru/123?utm_term=adjective+form+of+degrees+of+comparison PDF link annotation
- http://wozovumorawoka.sportsontheweb.net/57442489504.pdfIn PDF document text
- https://fizupubiwox.weebly.com/uploads/1/3/0/7/130775838/tufolifesixa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378386/normal_6021ceed22d0b.pdfIn PDF document text
- http://gojawufeki.getenjoyment.net/storyboard_examples_for_short_stories.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4496372/normal_5ffca1277dd29.pdfIn PDF document text
- https://judewefa.weebly.com/uploads/1/3/4/6/134652715/7122658.pdfIn PDF document text
- https://kovapuneluwaze.weebly.com/uploads/1/3/2/3/132302913/6210375.pdfIn PDF document text
- http://lalewenesuku.22web.org/simple_present_tense_worksheet_grade_4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482020/normal_5fd93455a0fce.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416510/normal_5fe303497b715.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420930/normal_5fd2e241c7e4c.pdfIn PDF document text
- http://penaxuwilamufo.iblogger.org/what_are_the_five_main_parts_of_a_computer.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495400/normal_5fe4a10057ad3.pdfIn PDF document text
- https://filekudop.weebly.com/uploads/1/3/4/0/134017403/b32575d49.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367665/normal_6009b733dc847.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454425/normal_60339d6d567eb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476566/normal_600c9e41a4690.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476758/normal_5ffb1b0ef14e3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/babetafaperaxov/99636580311.pdfIn PDF document text
- http://duvovopuma.epizy.com/sheikh_muhyiddin_ibn_al_arabi_books_in_urdu.pdfIn PDF document text
- http://tifuwonojize.epizy.com/john_grisham_camino_island.pdfIn PDF document text
- https://s3.amazonaws.com/nilititonawafim/cause_and_effect_in_english_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/lixuduwonifa/xifozigapixabelanaja.pdfIn PDF document text
- http://rivetibixonapaz.myartsonline.com/xeraviretipesevor.pdfIn PDF document text
- https://s3.amazonaws.com/mudurixo/berlitz_english_level_2_book.pdfIn PDF document text
- http://rotufixijisadi.onlinewebshop.net/zakufupawex.pdfIn PDF document text
- http://rogofideb.onlinewebshop.net/fozubig.pdfIn 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f4ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4AE	5568 bytes
SHA-256: `9a7924d572056539803060247089bf5cd23ee5598e424ef19b4daecce76e755a`
`font_01_sfnt_off0001079d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1079D	10836 bytes
SHA-256: `678ade9923e52c08d7164652f25d6d9d7d58b4b70b447e431e02b3dd17865b9c`

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