Malicious PDF — malware analysis report

Static analysis result for SHA-256 709d075a1f8bded4…

MALICIOUS

PDF

76.2 KB Created: 2021-03-07 21:35:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1c7748de174b21d2129b8a5f9789f9c SHA-1: 1b408a074a7c50d21a72be91c4878310828bfa23 SHA-256: 709d075a1f8bded4feeda20e1d5e4ffc7ed32319c5a8e44883b6fb9c5864a100
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to business acquisition. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://ponafet.ru/strik?utm_term=what+to+know+when+buying+an+existing+business
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/83e2758d921.pdf
    • http://opsnatur.fun/mizagixalegemevatojcsguh.pdf
    • http://nasufulorejuwe.mywebcommunity.org/nubikaveduribidagamizi.pdf
    • https://tokarakuwo.weebly.com/uploads/1/3/0/9/130969339/91af8.pdf
    • https://getezulesu.weebly.com/uploads/1/3/1/0/131071231/lurovuxukoge_bebum.pdf
    • http://kapovulup.mywebcommunity.org/83714548914.pdf
    • https://fadefewili.weebly.com/uploads/1/3/4/3/134316521/lijufezesalalulojaj.pdf
    • http://juzezudusota.mypressonline.com/bizafo.pdf
    • http://cancandance.org/muzivejodijipuvuwpy461.pdf
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/faxuf.pdf
    • http://yachts-4-sale.com/nejupaparakanovifijesdi1lc.pdf
    • http://xulodol.mygamesonline.org/23198421537.pdf
    • http://galajanexagaj.iblogger.org/verizon_fios_quantum_gateway_firmware_update.pdf
    • http://tixshopclub.fun/best_tutorial_for_html_and_cssqnsnt.pdf
    • http://neojust.ru/84543772329978ag.pdf
    • http://naturelofo.mypressonline.com/kixonarinekejuxebuwolotij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jovukanuwu.rf.gd/film_interview_in_the_train.pdf
    • https://s3.amazonaws.com/wozoxub/2069158335.pdf
    • https://s3.amazonaws.com/gumagabu/32756730017.pdf
    • http://novademovu.rf.gd/vimibesi.pdf
    • http://xovafufu.rf.gd/75820986154.pdf
    • https://s3.amazonaws.com/bewibiwat/42916422431.pdf
    • http://lunodemexixape.epizy.com/how_long_does_roomba_960_battery_last.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf9.bin
6b8f0dcd0e7d58d05adcd4b40968e06d475ebe9776ba3cf63f7e01498faaca1f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF9 5296 bytes
font_01_sfnt_off0000fe27.bin
be98f787ff10c63205effeb3e88be9a2b734a8467c3e98e037c36223b0c9b6db
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE27 11112 bytes