Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08aabff2666eb72…

MALICIOUS

PDF

76.2 KB Created: 2021-03-08 15:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3368d1a27e59e93e9d1394628abee5cb SHA-1: 830d7ad271ad2b44dad6a369deabb7839d07c707 SHA-256: f08aabff2666eb721a2b6a8a730359231e18a3c59260459bd2d17cd5222035c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/aws?utm_term=rheem+tankless+water+heater+guide PDF link annotation
    • https://cdn.sqhk.co/zadorari/Pievjic/16041473714.pdfIn PDF document text
    • https://cdn.sqhk.co/rapurakoke/JHoDYgd/likuzotetijunigud.pdfIn PDF document text
    • http://gufutaca6.xyz/watizutuvewuneazxvi.pdfIn PDF document text
    • http://phulop.store/sifibitifelomofilinidoksly.pdfIn PDF document text
    • https://zofumevovuve.weebly.com/uploads/1/3/0/8/130874077/dopulawunexukajuz.pdfIn PDF document text
    • http://randname.ru/gabibomipesuvuws849.pdfIn PDF document text
    • https://kodabovoxalomas.weebly.com/uploads/1/3/5/3/135340354/f12b1e22df5ac9.pdfIn PDF document text
    • http://sandwichhq.club/483345551527xwiy.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/7248134.pdfIn PDF document text
    • https://cdn.sqhk.co/xosuridasago/dggjiUn/byju_s_the_learning_app_download_uptodown.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/wabegejafujimogorud.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/factory_reset_netgear_3700.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/hcPhfij/29512160028.pdfIn PDF document text
    • http://pshcomonhere.xyz/34038070634tvlam.pdfIn PDF document text
    • https://sebiwijojemobod.weebly.com/uploads/1/3/4/0/134097571/d92a8e805549.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://df1882fa-13c5-42f1-8438-577935b594b9.filesusr.com/ugd/91932b_58888bf105964ff19622db096852803e.pdf?index=trueIn PDF document text
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_8189112571a64cc9af70c2abf0df32a1.pdf?index=trueIn PDF document text
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_15ef8ed6873c4828824f801cd5caabad.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_off0000ed86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED86 5404 bytes
SHA-256: 38dc6a68e2d5badd29c96717643f7d7e729ff97ea1280431e7ea297bbd47dcd2
font_01_sfnt_off0000ffc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 10628 bytes
SHA-256: 39beac3f54e7d422dd9187b9b5ca262f9bd4120819e318e9b245a00b87f3b705

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