PDF malware analysis — malicious · 315e694a471a83bd

MALICIOUS

PDF

78.6 KB Created: 2021-06-04 09:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 29168f5845a03e18a50b9a837d7a56ad SHA-1: 27785c0f15b99489595b34c9219cfe8856a9a31d SHA-256: 315e694a471a83bd619e4c292df0d0b822c812868a0c8ae05554de9f7ad03c62

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing attempt. The document contains numerous embedded URLs, with one prominent URL, 'https://druttle.ru/123?utm_term=employee+contract+template+free', likely serving as the primary lure. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests the document is part of a link farm designed to distribute malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=employee+contract+template+free PDF link annotation
- https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/3f62bc0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4467573/normal_5fdebb476b2e1.pdfIn PDF document text
- https://nelubetif.weebly.com/uploads/1/3/5/3/135322580/4206688.pdfIn PDF document text
- https://lawepisofav.weebly.com/uploads/1/3/4/4/134473025/a32798364.pdfIn PDF document text
- https://rigugoxa.weebly.com/uploads/1/3/0/7/130776225/1cd90a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4468571/normal_60004afb1ed49.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365552/normal_5fe4883492628.pdfIn PDF document text
- https://metiwefipit.weebly.com/uploads/1/3/1/4/131406934/3ad3060dbc.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4401697/normal_5fcb5d07bc494.pdfIn PDF document text
- https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/telobexosaxov.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://labidan.pbworks.com/w/file/fetch/144472377/can_could_may_worksheet.pdfIn PDF document text
- http://bupataved.pbworks.com/w/file/fetch/144420834/writing_algebraic_expressions_from_word_problems_worksheets_6th_grade.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b5643185-1a9e-421b-a505-c08bdd9dc8b1/the_wretched_of_the_earth_sparknotes.pdfIn PDF document text
- http://felefejimax.pbworks.com/w/file/fetch/144581394/73832111819.pdfIn PDF document text
- http://gabumur.pbworks.com/f/solicitud_de_empleo_econo.pdfIn PDF document text
- http://jolowajuwijo.pbworks.com/w/file/fetch/144521994/php_oop_mvc_tutorial.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae13d2c2-9abb-4369-a691-586c96bd9192/how_to_draw_face_for_beginners_easy_sketches.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/efef3339-464f-480a-8d76-315bb192a3f3/what_is_the_best_water_softener_salt_for_well_water.pdfIn PDF document text
- http://poguvovuk.pbworks.com/f/5___2018.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_off0000e8f9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8F9	4780 bytes
SHA-256: `ba9dd63b069255465e29ad9061f33a0210037f67d5dfb40a3d6997e7c4c18f21`
`font_01_sfnt_off0000f921.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF921	11272 bytes
SHA-256: `38d3062e4888efe5a820a525f512a0e2b3265393ea5901197c64701e636af820`
`font_02_sfnt_off00011f28.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F28	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

Open this report in the interactive analyzer, or submit your own file for analysis.