Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4319c990d37f7d2…

MALICIOUS

PDF

83.0 KB Created: 2021-03-15 00:07:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 033a9a8323d99911a57c6256c96c2bb9 SHA-1: d97fdb8a147e15f3cd661b2f7c1393feee6fd59b SHA-256: e4319c990d37f7d244a09807a164f9937423a25b796cb8fc245da3b3fb6dd68a
104 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, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to deliver a payload. The document body, though heavily obfuscated, suggests a lure related to downloading a game, further supporting a phishing or trojan delivery attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=gta+iv+new+apk+download
    • http://zathkatow.xyz/34556660135mtkfn.pdf
    • http://midunetojonawiw.mywebcommunity.org/what_food_should_i_eat_with_ibs.pdf
    • http://farozemirig.scienceontheweb.net/joxelesawupefabo.pdf
    • http://bitiwiz.medianewsonline.com/fanelijiwo.pdf
    • http://zurujavurobe.scienceontheweb.net/verbos_regulares_e_irregulares_en_ingles_en_pasado_simple.pdf
    • http://domavera.ru/77165189412h1u3q.pdf
    • http://eferevole.com/zitukaxmqwdl.pdf
    • http://garanibukumom.scienceontheweb.net/management_information_systems_salary_in_canada.pdf
    • http://anarchymedya.com/behavioral_theory_of_leadershipjp0qg.pdf
    • http://batizilojado.22web.org/78194468488.pdf
    • http://copyrightshelpcenter.com/internal_medicine_clerkship_guidedfilr.pdf
    • http://se-mrush.com/22513967746awbur.pdf
    • http://checkmycredit.info/worulesuzotazut4347u.pdf
    • http://dewisazovuvoxi.mywebcommunity.org/lenguaje_corporal_femenino_atraccion.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ab32cb61-200f-4a98-b7f1-d1174ac4f824/audiolibro_el_arte_de_no_amargarse_la_vida.pdf
    • http://ruxabuzavejar.epizy.com/how_to_tie_a_slip-knot_for_friendship_bracelets.pdf
    • http://wegugoleta.onlinewebshop.net/nomigobejeporobojomatole.pdf
    • https://uploads.strikinglycdn.com/files/c6ab4541-7486-4cf9-90d6-e4a101529c89/96954240120.pdf
    • http://mevivupi.epizy.com/snap_on_mt2500_scanner_manual_espaol.pdf
    • http://zowiseli.epizy.com/71012501202.pdf
    • http://wetukanezin.atwebpages.com/mepezozepikijuwigesul.pdf
    • https://uploads.strikinglycdn.com/files/cc8e7d93-00b4-4b4c-8044-a1b4402895f0/fisher_price_jumperoo_rainforest_friends.pdf
    • http://wimixuv.epizy.com/carfax_exempt_from_odometer_reporting.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_off00010676.bin
c5ef58a8c7c9fb5fe2b5d7ec27df21b4aebf38d368162a474d423629a93694ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 4924 bytes
font_01_sfnt_off0001176c.bin
7dfe2bfde33ff13d48f62d24aa6ead4aef91e626e0f8c56deeb24781779ae99e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1176C 11532 bytes

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