Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e67727ccee7a7b…

MALICIOUS

PDF

83.5 KB Created: 2021-03-28 19:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5cc3b6e31b56bc48c30d5802659a06f7 SHA-1: 598d6cba4b33f024c304eed4567a69d532ba7e50 SHA-256: 17e67727ccee7a7bf25f5a044a6432d64b045c4f845c34372f1368a035871e54
156 Risk Score

Malware Insights

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

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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mezovuduw.ru/wix?keyword=girl+chat+up+lines PDF link annotation
    • http://nutusugeralinet.mypressonline.com/civ_6_gathering_storm_sale_steam.pdfIn PDF document text
    • http://opensoda.pro/powozirekutewfaeht.pdfIn PDF document text
    • http://instup.xyz/tablas_de_durnin_y_womersleybg903.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gepafelixadu.onlinewebshop.net/wibuzosajebifu.pdfIn PDF document text
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_076686ecaa8241d787566071ff342ff5.pdf?index=trueIn PDF document text
    • https://459fb65c-52af-4c88-885a-43a44fbeaf25.filesusr.com/ugd/6a7407_6a7e0b060f9c457b9abdd2cc46255103.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/97780462277.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/61613107133.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/sebemobikisefuvev.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/cisco_webex_teams_linux.pdfIn PDF document text
    • https://9c43cb74-45e3-47de-9527-fda2e8336169.filesusr.com/ugd/af0aa9_2dad4e7c1c9a404bab18b8f26013886c.pdf?index=trueIn PDF document text
    • https://3633ae4e-9acc-45df-885e-1bfa1481cb44.filesusr.com/ugd/e73054_4d97394808364ccfb34015fd2386769b.pdf?index=trueIn PDF document text
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_a7d4d355d57c4563890176e774171de0.pdf?index=trueIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_c46776fb11e64a2a8f420af76e03f7c4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jezobasit/how_to_unlock_kwikset_powerbolt_2.pdfIn PDF document text
    • https://c3d762b3-5d50-4891-ab6d-43710edd2423.filesusr.com/ugd/3254bf_23e75eb3772641bca87ca314f3a318b8.pdf?index=trueIn PDF document text
    • https://22520ec4-2132-45a5-98b8-54db1b71d3ea.filesusr.com/ugd/b33b96_07950dc7b9f04bb9a7d9278cfd8903b5.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_off000108b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B6 5052 bytes
SHA-256: baf64e0b394a880ca8c040126482e0b717ab23981cd17aa92234917cb1adbbfc
font_01_sfnt_off000119dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DD 11676 bytes
SHA-256: 933dacb9372ab33ece8d1a0e4a517715b9d07f2f6196052a3512857d75ed9202

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