PDF malware analysis — malicious · 863add8d1449571e

MALICIOUS

PDF

86.3 KB Created: 2021-04-08 07:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 4a778d9d1b49cd0e6e23b95c5a4a9517 SHA-1: 27bf1b9bc67dab677900d6cfe49c0df8e85dd7d0 SHA-256: 863add8d1449571edae9b91925f6fb83c4755627d2709fd1349ad9ea4e8d7503

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ML classifiers and ClamAV. It contains heuristics indicating it's a link farm on disposable hosting and attempts to lure users into executing commands via the clipboard. The embedded URL points to a domain associated with phishing lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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://resalured.ru/strik?utm_term=how+to+activate+ms+project+2016 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4405907/normal_60644573d3041.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4404299/normal_5fe1c88599e11.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413573/normal_604f7221671bd.pdfIn PDF document text
- http://wurulef.22web.org/modern_cabinetmaking_textbook.pdfIn PDF document text
- http://kvyovk.xyz/how_to_start_a_craftsman_weedwackersiqlh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379618/normal_601dcfcaf22aa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409417/normal_5fe2308510ff7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426541/normal_6039bed0c0998.pdfIn PDF document text
- http://aydym.club/vex_iq_parts_postervkrpp.pdfIn PDF document text
- http://uptodate.site/the_shakespeare_stealer_chapter_15_summary11la4.pdfIn PDF document text
- http://all-gopro.com/908982618118yl0y.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449392/normal_606e853ab6fcd.pdfIn PDF document text
- http://my-favshop.online/bozipisamdzno8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388041/normal_60137f4cbfa42.pdfIn PDF document text
- http://solent.bar/how_to_use_advanced_excelsfa4v.pdfIn PDF document text
- http://nat-yoga.space/additional_math_igcsewg18l.pdfIn PDF document text
- http://snt-br.ru/true_prepaid_cardr4dx5.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
- http://rerupini.epizy.com/99339780593.pdfIn PDF document text
- https://s3.amazonaws.com/lopeteb/what_is_the_pragmatic_theory_of_truth.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/draw_sheet_definition.pdfIn PDF document text
- https://s3.amazonaws.com/pesetufavo/the_shack_restaurant_in_southold_ny.pdfIn PDF document text
- http://vugapadilubokis.epizy.com/pete_s_dragon_movie_480p.pdfIn PDF document text
- http://libunasufukif.epizy.com/abstract_reasoning_reviewer.pdfIn PDF document text
- http://surifuj.rf.gd/is_there_a_second_book_to_the_couple_next_door.pdfIn PDF document text
- https://s3.amazonaws.com/lunojol/11299493110.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_off0001050e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1050E	5400 bytes
SHA-256: `90756d2c767816df362c557610cfd6114698f3dc6afda187b8f26256fa53a586`
`font_01_sfnt_off00011786.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11786	11104 bytes
SHA-256: `4c21448ce9dbd8ff5bb64e89b827b1dbcd330315933e3e137947ae3662a64ca5`
`font_02_sfnt_off00013d6b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13D6B	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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