Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4709338191e130…

MALICIOUS

PDF

108.2 KB Created: 2021-03-18 12:20:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77edcbc867e79d4145d25525e041a200 SHA-1: 26f9cb5a2b56050926b7d6164111d518f77364c3 SHA-256: 5e4709338191e1306387303ffe207ebc7b37259abd8efd7f964b61af8e89bb9a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly to Weebly and other hosting services, suggests an attempt to direct users to potentially harmful content or to manipulate search engine results. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=escudo+nacional+de+costa+rica
    • https://semanipiji.weebly.com/uploads/1/3/5/3/135312460/vivumisu.pdf
    • http://mishabelle.ru/nivibaabnkt.pdf
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/2b8dafb71f.pdf
    • https://vumusubivabup.weebly.com/uploads/1/3/4/4/134491869/bamon_nilajago_xuridozadoma_xegobepenubezuf.pdf
    • http://daimontimur.org/66188226849v1mx8.pdf
    • http://natur-bio.space/the_postman_always_rings_twice_1946_full_movie_free_onlinepj5s5.pdf
    • http://amorexpo.com/naruto_shippuden_ultimate_ninja_impact_android_apk4k349.pdf
    • http://palubofapejuraw.mywebcommunity.org/tajivisikukemoz.pdf
    • http://teachersaid.fun/lowibewabowotidetilokonop0ct.pdf
    • https://wowumufugijakig.weebly.com/uploads/1/3/0/9/130969685/8087904.pdf
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/18961248695c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/defujo/mejuwelozebuvane.pdf
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_2f57cf24997b4b8e9c9deb8fb06cd34d.pdf?index=true
    • https://s3.amazonaws.com/zamuriza/85224712739.pdf
    • http://duxepivol.myartsonline.com/walter_riso_amar_o_depender.pdf
    • https://s3.amazonaws.com/leributafa/safe_work_method_statement_template_free.pdf
    • https://31c8a3d4-0132-49f1-a04f-09c79d03e01f.filesusr.com/ugd/a4da84_8ab36419069844a28f58e0f7a683f05e.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000157c3.bin
b76b525b8dc48363b20c66487a73b71b842cececabd5198cbb6cffd60b934e06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157C3 4772 bytes
font_01_sfnt_off000167fa.bin
e9416820c39cc2f0969305fbd852ac3693fbbadbc008ad8f4157a87ffe47de1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x167FA 14344 bytes
font_02_sfnt_off0001942d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1942D 4324 bytes

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