PDF malware analysis — malicious · ff929d2c87c6ccfb

MALICIOUS

PDF

87.5 KB Created: 2021-04-30 23:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 8fc0a75d88615068a025500b269e8aa4 SHA-1: 2678dce27b2ec6f18a1ceba4d385493d05dea40b SHA-256: ff929d2c87c6ccfb5f67cbb4db83a5ac1663784ccb9a87e47e07ab19603d78d1

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a domain designed to mimic search results, likely to trick users into visiting a malicious site. The PDF structure and embedded content suggest it's part of a phishing campaign, potentially using JavaScript for obfuscation or redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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://xezojetit.ru/strik?utm_term=how+did+the+government+react+to+the+great+depression PDF link annotation
- https://cdn-cms.f-static.net/uploads/4488139/normal_602f7028d98a4.pdfIn PDF document text
- http://lnstagram-copyright-confirms.com/wususavr0fjh.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403806/normal_5fc848aa63620.pdfIn PDF document text
- http://tibetterrier.ru/aankhen_full_movie_mkvmbwmc.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403817/normal_600132147bcaf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415531/normal_5fdbb557716fc.pdfIn PDF document text
- http://zebizekesodu.iblogger.org/saxevapupogawol.pdfIn PDF document text
- http://choosemadam.site/kuposefedufexajujd32e0.pdfIn PDF document text
- http://igbusinessabouthelp.com/fivomogenawafabipenegag9oqb6.pdfIn PDF document text
- http://on-arenas.com/hawaii_five_o_original_episode_guidebgvcu.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://s3.amazonaws.com/bupesejirijejus/alder_lake_wi_fishing_report.pdfIn PDF document text
- http://janeresofopojaz.epizy.com/tomuserunonavetaxak.pdfIn PDF document text
- http://vutaxinasiva.epizy.com/elan_touchpad_driver_windows_10_hp.pdfIn PDF document text
- http://ninufajo.epizy.com/whirlpool_quiet_partner_1_reset_codes.pdfIn PDF document text
- https://s3.amazonaws.com/lupuvogotog/adblock_free_for_microsoft_edge.pdfIn PDF document text
- http://lobakixadob.epizy.com/58734675833.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/637d90d3-b40f-4961-8df0-0b85ee083477/vafabarivadofewekobijiw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/46e4370d-424c-47b7-ac11-d9503cdad3dd/43422901148.pdfIn PDF document text
- http://memexojiwa.epizy.com/72667753598.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f8c81e68-8430-48f3-a09f-eff787306ba5/bofefivopawanuvak.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1e426b05-2133-4e8d-adba-107e7d7fb9a7/ged_practice_test_math_word_problems.pdfIn PDF document text
- https://s3.amazonaws.com/jamuluvuvava/75422772046.pdfIn PDF document text
- http://sedunewer.epizy.com/do_aldi_do_gluten_free.pdfIn PDF document text
- https://s3.amazonaws.com/vazisi/how_to_get_hp_printer_out_of_single_cartridge_mode.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00010a37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A37	5356 bytes
SHA-256: `807d8184d2662264ea5e9a1cc2dd69bcb8ed13b509b7f1ed152d673fefef3b79`
`font_01_sfnt_off00011c51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C51	11188 bytes
SHA-256: `7e146140bc95ed4dc989db46aa14d014a538035520f0e2f042c720cee24c4647`
`font_02_sfnt_off000141cf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x141CF	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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