Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ea0f0fee16e35e…

MALICIOUS

PDF

139.0 KB Created: 2021-03-29 14:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d47b77ff370c7a0a1a97b4cc1f5c25e8 SHA-1: 46905a7df321f989def519cbe0f768529144e78c SHA-256: 78ea0f0fee16e35edb82fd0bf28ca0cb803d6ec2e3cf46740e886e4a69818151
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic suggests the document's content is designed to trick users into installing a fake browser update or extension, a common tactic for credential theft or malware delivery. The presence of numerous external links, including one to 'zajinet.ru', further supports a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

Heuristics 6

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://zajinet.ru/wix?keyword=cheapcast+apk+2020
    • https://faxufoxexukixel.weebly.com/uploads/1/3/4/4/134455740/d939856252e18.pdf
    • http://riwopebikiguwa.mywebcommunity.org/history_of_agency_theory.pdf
    • http://biwumani.mywebcommunity.org/jixazuvufap.pdf
    • https://rurefisofe.weebly.com/uploads/1/3/5/3/135325463/xomafilesi.pdf
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/6140099.pdf
    • https://xewezepi.weebly.com/uploads/1/3/0/8/130813550/wopufapilovatifomo.pdf
    • https://simalono.weebly.com/uploads/1/3/1/8/131856945/dabenuwegogimu_popazijave.pdf
    • https://tedevonefuses.weebly.com/uploads/1/3/4/5/134528644/8671873.pdf
    • https://gibejeki.weebly.com/uploads/1/3/1/4/131438187/jurewalefex-xegaminatadebo-lazaf.pdf
    • http://bovakepixoworax.iblogger.org/jojedo.pdf
    • https://setuwome.weebly.com/uploads/1/3/0/8/130874340/duxitolarejus.pdf
    • https://morexenuf.weebly.com/uploads/1/3/5/3/135311883/gipamonokut.pdf
    • http://tafelutij.22web.org/sowulomojarogetaveji.pdf
    • https://nitafigiwulizo.weebly.com/uploads/1/3/1/4/131406945/204a4cdf3d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f690d59e-2d45-4c07-978d-99a679e8ec19/62866274226.pdf
    • https://uploads.strikinglycdn.com/files/0015c040-e384-4895-9cf7-ddb70a04a86e/what_is_a_22_derringer_worth.pdf
    • http://tupoxejaka.epizy.com/92896417108.pdf
    • http://penobugixova.atwebpages.com/local_anaesthetic_drugs.pdf
    • https://s3.amazonaws.com/wezukep/kojagajojujepegasuverexu.pdf
    • http://fezivadijar.rf.gd/bachelor_of_science_in_business_information_technology.pdf
    • https://s3.amazonaws.com/wuniku/singam_dance_video_song.pdf
    • https://uploads.strikinglycdn.com/files/fab958ab-62a7-41a4-9b1d-352c7e13a60c/what_are_the_forms_and_types_of_philippine_music.pdf
    • https://s3.amazonaws.com/biwuwukesazef/87574008088.pdf
    • http://nanizezuzodujo.epizy.com/68711592940.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/68304638018.pdf
    • https://s3.amazonaws.com/tibitexil/aahat_serial_all_episode.pdf
    • 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_off0001d6ca.bin
876512e136133d9c4b8a80e28e7c8997c96b82c9c357f950877515fb0c5dfc28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D6CA 4776 bytes
font_01_sfnt_off0001e70d.bin
1ffee59b5da3c86bd603cf36bc69ecc36c5d3214186093cb49b58e91f7086988		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E70D 12052 bytes
font_02_sfnt_off00020fe9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20FE9 4324 bytes

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