Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e358340ddc57daf…

MALICIOUS

PDF

76.1 KB Created: 2021-03-30 16:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b8c9f1ca39f7f961fd0d4a5a7b38b219 SHA-1: be3556f7808475258b1f4a814f0449dac7813dd7 SHA-256: 7e358340ddc57daffe8802c35a277294a77ce6563e04875c944f80d689e159b5
166 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'cheating a pot of gold machine', directing users to a suspicious URL. The presence of external URIs and the overall structure indicate an attempt to redirect users to malicious content, likely for phishing or malware distribution.

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://druttle.ru/strik?utm_term=how+to+cheat+a+pot+of+gold+machine PDF link annotation
    • https://ketoleva.weebly.com/uploads/1/3/4/6/134642234/lixirij.pdfIn PDF document text
    • https://bozobamawokoruv.weebly.com/uploads/1/3/4/3/134350924/e027a65.pdfIn macro / runtime command snippet
    • http://fasekafalig.scienceontheweb.net/guveguzajo.pdfIn PDF document text
    • http://palawawez.mypressonline.com/kipidigutirapukowefotu.pdfIn PDF document text
    • http://sutiboju.sportsontheweb.net/67357714934.pdfIn PDF document text
    • http://wivikaxebox.medianewsonline.com/hard_reset_disabled_iphone_7_without_computer.pdfIn PDF document text
    • https://fejilezujew.weebly.com/uploads/1/3/4/3/134340931/repigu-tifexebatu-felatuvedozarav.pdfIn PDF document text
    • http://wepovak.iblogger.org/solajir.pdfIn PDF document text
    • http://dapibat.22web.org/bilosulavelizev.pdfIn PDF document text
    • http://fazojum.66ghz.com/ravulogefi.pdfIn PDF document text
    • https://ketoleva.weebly.com/uploads/1/3/4In macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/33156034035.pdfIn PDF document text
    • http://vemesivudaro.epizy.com/how_to_use_easy_waves_curl_activator.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/mathematics_12_book.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/87377073-8e10-49d6-9c21-481fc3551f8e/xofeduvevolirisiwibujenaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e85c4f-9008-4f86-a2be-1d88a987c504/40076574361.pdfIn PDF document text
    • http://magajavopisili.epizy.com/71104021144.pdfIn PDF document text
    • http://sewevikefusox.epizy.com/how_to_get_better_at_mental_math.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/78919807994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b1e5c1-e126-4606-92d4-9f6b477cfe75/zifevepisawamifelebuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5771cc4-38e2-4cc2-9d90-4b5e2e806ee5/36153254752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a8ffa6-caa3-4bfe-a34d-06ace3c751ae/itouch_4th_generation_charger.pdfIn PDF document text
    • http://delixerilebuk.epizy.com/perafifes.pdfIn PDF document text
    • http://peparetixu.epizy.com/calidad_total_tqm.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_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 5348 bytes
SHA-256: 8d318bc33ae80959f2b30aa4c9920ce08344e2730092b4fa78ee211ddf6f1728
font_01_sfnt_off0000fe04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE04 10828 bytes
SHA-256: 055433bd3128c0f1c2fe5093da9a17f0a28dccd86b5235f8e17cb0a508f04850