Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e577686aeb5ff32…

MALICIOUS

PDF

75.5 KB Created: 2021-03-24 02:49:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 89297ec1f06a96c239c0d522cd6b8d12 SHA-1: ec3d25f13250b137e09ad35e034e27c208aa04f6 SHA-256: 1e577686aeb5ff320a011cee1c2206b393272c5301d8693c811488549e4c7427
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The document body is heavily obfuscated, but the presence of external URIs and the PDF_SEO_LINK_FARM heuristic strongly suggest the primary goal is to redirect users to potentially malicious or unwanted websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/strik?utm_term=wiat+score+descriptors PDF link annotation
    • http://irbestate.ru/97564086581tkw91.pdfIn PDF document text
    • https://zotagozugub.weebly.com/uploads/1/3/0/7/130739891/9096575.pdfIn PDF document text
    • http://tevaruv.sportsontheweb.net/77370827134.pdfIn PDF document text
    • http://dontbeshy.xyz/data_analytics_platform30kqr.pdfIn PDF document text
    • https://mexulurobe.weebly.com/uploads/1/3/6/0/136057308/6485083.pdfIn PDF document text
    • http://straponartist.com/is_project_xcloud_free4pxhx.pdfIn PDF document text
    • http://trychambre.xyz/john_deere_455_drill_for_saleya2zq.pdfIn PDF document text
    • https://betetudiju.weebly.com/uploads/1/3/5/3/135348010/vaxebo.pdfIn PDF document text
    • http://instas.site/how_to_find_a_burial_plot_uk42slf.pdfIn PDF document text
    • http://varnisvakq.ru/el_nombre_de_la_rosa_pelicula_onlineo4313.pdfIn PDF document text
    • https://dudafenerow.weebly.com/uploads/1/3/4/9/134900552/3985922113e28.pdfIn PDF document text
    • https://solugukaxazazo.weebly.com/uploads/1/3/4/7/134748989/62f37.pdfIn PDF document text
    • https://webuwexuzebonal.weebly.com/uploads/1/3/0/7/130775053/kojadagulafiwixafa.pdfIn PDF document text
    • http://emmetrix.net/4319733915bcfp4.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/how_to_mods_skyrim_xbox_one6n8vs.pdfIn PDF document text
    • https://zugixipenelir.weebly.com/uploads/1/3/4/5/134591811/b412c2eea56.pdfIn PDF document text
    • https://lulofaki.weebly.com/uploads/1/3/1/4/131453598/wedukakona.pdfIn PDF document text
    • http://goldstein.berlin/sunabikudabavirunazo62iz6.pdfIn PDF document text
    • https://dugubutufafug.weebly.com/uploads/1/3/0/7/130775350/tobowomemegib.pdfIn PDF document text
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/bumomuzezunufidasar.pdfIn PDF document text
    • http://gukivuzijisuva.getenjoyment.net/nowumaduvixovikevasej.pdfIn PDF document text
    • http://1xbets-regs.site/26620119108o26bk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_f5343b9329ec4b2a8bd02eb0d8889c8c.pdf?index=trueIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_eb6b06c8f1934fc68f851632033c81ac.pdf?index=trueIn PDF document text
    • http://davinawoguzag.atwebpages.com/pdf_fish_farming_business_plan.pdfIn PDF document text
    • https://8319d365-0190-44ee-b2f3-e76f6fd230eb.filesusr.com/ugd/112488_14f78eaa486a4a6898a0866347094fe6.pdf?index=trueIn PDF document text
    • https://48bf584d-d56c-45cf-b4f3-c1c05dce5274.filesusr.com/ugd/3f4b99_91a7cbe36a3a434da7041e021b5a704e.pdf?index=trueIn PDF document text
    • https://836291d8-7b77-40db-be8c-3105928c7ef3.filesusr.com/ugd/aae074_90b7feb9db5143a592dcbdfca48731de.pdf?index=trueIn 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_off0000e97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 5048 bytes
SHA-256: 721a96f9f06f92fd7b4123511cb31ede7d4c960ceda60b4b8ef35bec71800392
font_01_sfnt_off0000fac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC6 11156 bytes
SHA-256: 815cd154626b356589040128f99074e8bf7400055f963d6adb8e8042e459a6ba

Open this report in the interactive analyzer, or submit your own file for analysis.