PDF malware analysis — malicious · efae9e9b420e7287

MALICIOUS

PDF

80.6 KB Created: 2021-03-12 16:09:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04

MD5: 7274c732b1719b1187c4091943c2fe67 SHA-1: e4ce098aaa303102084b2fbbf430a720a610dfda SHA-256: efae9e9b420e7287e34fba3749734293761d1fa3f810461d4b72ec1851c62252

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary external URI pointing to 'https://midufefew.ru/wix?keyword=awesome+civil+engineering+projects', suggesting a lure to a malicious website. The document body, though heavily obfuscated, appears to be a deceptive lure related to civil engineering projects.

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://midufefew.ru/wix?keyword=awesome+civil+engineering+projects PDF link annotation
- https://cdn.sqhk.co/silagigud/jaichiw/41347613068.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417531/normal_5fedd8c172d60.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390385/normal_600eccd8c3263.pdfIn PDF document text
- http://kowesaxulenim.22web.org/vet_nurse_uniform_uk.pdfIn PDF document text
- http://sakivometo.medianewsonline.com/centralized_database_system.pdfIn PDF document text
- http://wedevaz.sportsontheweb.net/sub_zero_fridge_for_sale_toronto.pdfIn PDF document text
- http://fogafiv.mypressonline.com/can_you_make_a_living_day_trading_futures.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393901/normal_6022c80b4c269.pdfIn PDF document text
- https://cdn.sqhk.co/potiribuwuf/iexZQha/charlottenburgh_park_cornwall.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4492281/normal_5fdafe030fdd7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413121/normal_5feb8066dde5c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476943/normal_600ddb0b056b6.pdfIn PDF document text
- https://cdn.sqhk.co/naxupowu/gchjgif/heavy_industries_taxila_board.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405186/normal_5fd1efd968e3c.pdfIn PDF document text
- http://josumewemuzob.getenjoyment.net/types_of_conclusions_in_philosophy.pdfIn PDF document text
- https://cdn.sqhk.co/vakanaju/egdjzge/bellacino_s_nutrition_information.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472763/normal_5fd3a779ea638.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4498345/normal_6004b6bf66fa7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411696/normal_6026203cadd12.pdfIn PDF document text
- https://cdn.sqhk.co/nokikijun/gd6Ajhb/duzivuvokowosedukerovo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387567/normal_603b2959c25f7.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369514/normal_5fef590946a0a.pdfIn PDF document text
- http://fudazozotakaxal.mywebcommunity.org/relokasesudig.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373271/normal_6026efa774560.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gasonuranokojof.epizy.com/sq8_mini_dv_camera_price_in_pakistan.pdfIn PDF document text
- http://xusijaxux.rf.gd/97419442920.pdfIn PDF document text
- http://mutomipana.rf.gd/52105426111.pdfIn PDF document text
- http://favigawesuwevo.rf.gd/wii_u_release_date_uk.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_off0000fe78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE78	5260 bytes
SHA-256: `3c39feae4c9f281fccb2ccbd6b17dcac43411cc3a69f2fc426f0eaafa32ed844`
`font_01_sfnt_off00011069.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11069	10644 bytes
SHA-256: `26c40fbcd86fc4d575c3b7a8443fc62bda91129ff222a93d3d7911736b3d787a`

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