Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eaf78f794ab5006…

MALICIOUS

PDF

76.6 KB Created: 2021-03-14 00:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f63e2f46f1208fb67ca2148cdaa5ce42 SHA-1: c5ff012587fac90a669e592cfa42e4141cda1ce1 SHA-256: 1eaf78f794ab5006d9652a82f8903fc840ee973bfe0c7329b15f97349fedaada
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, suggesting an attempt to redirect users to malicious sites. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://jumiwimov.ru/123?utm_term=hide+caller+id+android+7 PDF link annotation
    • http://dosubodanes.mypressonline.com/161_bus_route_schedule.pdfIn PDF document text
    • http://dedaruk.scienceontheweb.net/pugaxakep.pdfIn PDF document text
    • http://ig-copyrightviolation.com/tongue_piercing_care_guidep8bg3.pdfIn PDF document text
    • http://digitalmicroteter.xyz/volowup9j25u.pdfIn PDF document text
    • http://rabiwitijif.medianewsonline.com/garmin_gns_430_manual.pdfIn PDF document text
    • http://zavolofa.mygamesonline.org/verovuwudotizerulib.pdfIn PDF document text
    • https://vixodago.weebly.com/uploads/1/3/4/7/134716619/2142882.pdfIn PDF document text
    • https://cdn.sqhk.co/jomutepe/RY3Mahe/spacex_trip_to_mars_cost.pdfIn PDF document text
    • http://pipavinekiga.mywebcommunity.org/can_you_draw_on_ipad_pro_without_apple_pencil.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuluni/iHihaih/nusurifid.pdfIn PDF document text
    • http://lirinevewafa.mypressonline.com/razor_power_core_e200_weight_limit.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/julepamisin.pdfIn PDF document text
    • https://cdn.sqhk.co/pozusonitid/zZlic9u/21443778732.pdfIn PDF document text
    • http://gukevipagopu.mywebcommunity.org/54351576367.pdfIn PDF document text
    • https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/toruwupibedegujefo.pdfIn PDF document text
    • http://normab-id.com/239014155349nb2z.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/1621698.pdfIn PDF document text
    • http://bivaxopepukoxi.getenjoyment.net/2593103535.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/6a6a34.pdfIn PDF document text
    • http://pidusejop.medianewsonline.com/cognitive_behavioral_therapy_to_treat_depression.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/23402677979.pdfIn PDF document text
    • https://zuwezulexexufup.weebly.com/uploads/1/3/4/5/134582503/godukipizakidifazu.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/jfkFl2t/xibotaxubuke.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://rakixufemagotut.atwebpages.com/durga_saptashati_parayanam_telugu.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/stand_by_me_chords_cifra_club.pdfIn PDF document text
    • http://merovuditipin.onlinewebshop.net/safokiturerozobewekine.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.

FilenameKindSourceSize
font_00_sfnt_off0000e28b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28B 4504 bytes
SHA-256: 63f8130c1bd35f26fbef467d6940db9722b98b894c8246368423dbaed65b47f9
font_01_sfnt_off0000f1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C9 10904 bytes
SHA-256: 57069cc09f186307580f5f8a569e6c3befc340519cce05c4411c2d6e1c2ade52
font_02_sfnt_off0001171a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3