Malicious PDF — malware analysis report

Static analysis result for SHA-256 de9c089dc67a8703…

MALICIOUS

PDF

78.3 KB Created: 2021-05-12 13:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d21f1455979e569db0732371cc8d2bfc SHA-1: 9b68743c376c33f8de1436cd81dde921adda5656 SHA-256: de9c089dc67a8703e48f4842b02e784d1f8e63217c4c7e0d3dfe126b93b0d9a8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://maypoin.ru/strik?utm_term=how+to+use+sunflower+oil PDF link annotation
    • http://milanomoda.site/balance_sheet_intangible_assets_examplesn23lj.pdfIn PDF document text
    • http://doxewoga.iblogger.org/zukigufegixopaxep.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/zuruwejeforugiru.pdfIn PDF document text
    • http://korogesubelokut.mypressonline.com/cuantos_centimetros_cuadrados_equivale_a_un_metro_cuadrado.pdfIn PDF document text
    • http://sokuzise.iblogger.org/cinema_hd_alternative_apk.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/raledanowavipakij.pdfIn PDF document text
    • http://vewedomodisex.22web.org/sibixituduben.pdfIn PDF document text
    • http://circus.market/143835706316yhbw.pdfIn PDF document text
    • https://pagajunudew.weebly.com/uploads/1/3/5/9/135992687/5868661.pdfIn PDF document text
    • http://dabuzasomadote.22web.org/papojiwenetofewawowe.pdfIn PDF document text
    • http://kyukty68.xyz/fagesfvqvk.pdfIn PDF document text
    • http://dibosezufo.getenjoyment.net/8805070451.pdfIn PDF document text
    • https://rijevolokawuja.weebly.com/uploads/1/3/4/6/134661742/5c59224f57fbe.pdfIn PDF document text
    • https://zarimuxeve.weebly.com/uploads/1/3/4/8/134897304/54cec9e93.pdfIn PDF document text
    • http://ligelasew.iblogger.org/lovuzo.pdfIn PDF document text
    • http://zidujuwus.iblogger.org/comic_book_template_png.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nozamoto.epizy.com/relier_plusieurs_en_1.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/vefadu.pdfIn PDF document text
    • https://5ccda086-29c7-4024-8a93-689df1f3b89c.filesusr.com/ugd/ed8107_205c6f357c89413eb183a38de5283cc8.pdf?index=trueIn PDF document text
    • https://ab737b70-891a-4a1f-8db9-ee548211cb31.filesusr.com/ugd/ce14f3_5869d154c67341a8abbc6f44a3c3d607.pdf?index=trueIn PDF document text
    • http://pepajefosub.epizy.com/sirawidujol.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_4ade111297014f60b597b8fe5ddec50c.pdf?index=trueIn PDF document text
    • http://pokobopuket.epizy.com/vorudojabaj.pdfIn PDF document text
    • http://govegid.rf.gd/46366998273.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_off0000f5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DC 4604 bytes
SHA-256: 29c02d89ca2126e4ebb1d6d1b3e16f24477559a7f5c190d436e6e58e057ca178
font_01_sfnt_off000105a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 11088 bytes
SHA-256: 08bb08d3926c91ea512729ac093ab4973a09a56f884449c0b43741b5452e4865

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