Malicious PDF — malware analysis report

Static analysis result for SHA-256 1958faab40ad9805…

MALICIOUS

PDF

112.1 KB Created: 2021-03-24 19:53:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8b5448fffe3ecffcf838c12991a75d0e SHA-1: 53c7f9c1f70f83c7937eb1d9a69269a036215132 SHA-256: 1958faab40ad98053a2b367e9f47c5d59efb8339a65b45fd1e3de0a16948b84f
166 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of external URIs and a 'SE_LOLBIN_RUN_COMMAND' heuristic suggests the document is designed to redirect users to potentially harmful websites or execute commands. The document body, though heavily obfuscated, contains references that align with phishing or scam lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://seumenha.ru/wix?keyword=how+to+hypnotize+someone+without+them+knowing PDF link annotation
    • http://tipofeliluget.medianewsonline.com/jolofovonubekukoz.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/undang_undang_apbn_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493881/normal_603b31fc75ca3.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4418987/normal_600fa61fac906.pdfIn macro / runtime command snippet
    • https://wazasamiv.weebly.com/uploads/1/3/0/7/130775889/3b655b6cfdefb07.pdfIn PDF document text
    • http://xekalabaxuv.medianewsonline.com/dosis_cefotaxime_anak.pdfIn PDF document text
    • http://femuxeririta.mygamesonline.org/93477353476.pdfIn PDF document text
    • https://pawasisuleti.weebly.com/uploads/1/3/4/6/134652657/143131.pdfIn PDF document text
    • https://vafoxerosasajox.weebly.com/uploads/1/3/5/3/135398531/360b0d2537.pdfIn PDF document text
    • https://jiwuzutobaduf.weebly.com/uploads/1/3/4/8/134889186/1c2cd34b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5ffcb3716c4aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_60394d3f55e41.pdfIn PDF document text
    • https://tumomelep.weebly.com/uploads/1/3/1/4/131405997/ludidotimukak_kesewer_laruximeguxoke_zuvibusu.pdfIn PDF document text
    • http://vixabaj.scienceontheweb.net/aptitude_examination.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/undang_undang_In macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a48d764-2a0a-462f-a66d-0855cb4e7951/gem_of_the_ocean_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992249bc-9ffe-46be-b4f6-6042aba9e9cb/how_to_check_serial_number_of_laptop_via_cmd.pdfIn PDF document text
    • http://kefekebew.rf.gd/29554688466.pdfIn PDF document text
    • http://lebevinawefebo.rf.gd/53560247160.pdfIn PDF document text
    • http://vogafaxusa.epizy.com/what_gender_is_simbas_child.pdfIn PDF document text
    • http://texazufuvo.rf.gd/how_do_i_refill_my_epson_220_ink_cartridge.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/effects_of_globalization_in_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deb638cb-6d12-4903-bf2a-2e397e59c7c8/class_10_physical_science_book_wbbse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f196d97-bf93-4faa-8c90-7d478d2991c5/speed_queen_washer_maintenance.pdfIn PDF document text
    • http://werewipabelud.rf.gd/dj_villager_sa_2018_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a73d38-c5b3-43ea-87e2-017685b3cbad/nujulazolexuxa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17824 5164 bytes
SHA-256: 024cb3bd18a42042d4866bf4796cb53cff2342330b2d55a57447204292455cac
font_01_sfnt_off000189b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x189B9 11416 bytes
SHA-256: 59aa8e9361a9093236189a8ba268250339661dff1ce3e171ea8442dbcd76baa7