PDF malware analysis — malicious · fbf354d2f384c605

MALICIOUS

PDF

80.8 KB Created: 2021-04-07 18:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 2cb2837dd5ab7c89f9c3c254154cace3 SHA-1: 0610a08425188c505250c1c48f793aabcabeec51 SHA-256: fbf354d2f384c605da71bd0c274a9f249906a38ce8e561a560b68152fd993ff6

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://jottigo.ru/123?utm_term=whatsapp+latest+version+android+free PDF link annotation
- https://cdn.sqhk.co/benanejufa/hc3mBwI/14031370857.pdfIn PDF document text
- http://specialsale.info/wizupodewagenaxiwanaa8po5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484804/normal_601a2270b7e6f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410190/normal_600c9d2cdd5a9.pdfIn PDF document text
- http://ritegifufefut.scienceontheweb.net/nowisemidifadapijopisova.pdfIn PDF document text
- http://jaxagogilexet.sportsontheweb.net/sherlock_holmes_2_tamil_dubbed_movie_download_720p.pdfIn PDF document text
- https://cdn.sqhk.co/gopepilexafi/fiheohf/55447690838.pdfIn PDF document text
- http://tugrull.com/mavirivonofiluvidunojoreo2b9f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452865/normal_5fd6871134533.pdfIn PDF document text
- https://cdn.sqhk.co/botonerepap/jvgiYhj/dairy_free_pancake_recipe_for_babies.pdfIn PDF document text
- http://lnstagramverifiedsbadgesforms.com/what_time_does_the_nyse_stock_market_openep83w.pdfIn PDF document text
- http://creditscorerepair.info/6629850326epdww.pdfIn PDF document text
- http://repair-planshetov.ru/bitmap_brothers_godsa953b.pdfIn PDF document text
- https://cdn.sqhk.co/xupodafib/ggj87wp/guided_reading_books_level_a.pdfIn PDF document text
- http://luwinilulurop.mywebcommunity.org/chicken_chaap_recipe_in_bengali_language.pdfIn PDF document text
- http://sayfelengs.space/57159746716333zi.pdfIn PDF document text
- http://cz-nitrof.website/89027607276aijqe.pdfIn PDF document text
- http://hotsales-com.xyz/antiphospholipid_syndromeksv45.pdfIn PDF document text
- http://wudebakafepi.mypressonline.com/the_graveyard_book_movie.pdfIn PDF document text
- http://suwefazimim.medianewsonline.com/graphic_design_portfolio_template_free_download.pdfIn PDF document text
- http://dizititakozazi.mywebcommunity.org/bash_cheat_sheet_mac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365545/normal_60640ecd44d9f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e6d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6D9	5200 bytes
SHA-256: `bcc351f773624e0f965eb2937be80761287bfad1fb47b23cde1bb9e8056f699e`
`font_01_sfnt_off0000f899.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF899	11112 bytes
SHA-256: `aee8d76c6096815425dbeee334871a5af6acc89c905a17d6cf8ff3210b47cdf3`
`font_02_sfnt_off00011ec1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11EC1	16168 bytes
SHA-256: `794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8`

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