Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e88badf9887af6…

MALICIOUS

PDF

81.3 KB Created: 2021-04-04 23:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73654a15b975076ec00e6b384f677872 SHA-1: d1efce820ad652bf4a9a88a1cf0b0511be83f156 SHA-256: 09e88badf9887af6a912b883e107ea5bbd4ad58b1519b8b98aae14fb9966c5e5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, indicative of a link farm designed to obscure the final destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this malicious intent. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/wix?keyword=mama+allpa+wiki
    • https://woxigixekamut.weebly.com/uploads/1/3/0/7/130739530/7445268.pdf
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/gifoka_gupemofiweratup_terapewo_biregirurakum.pdf
    • http://fibutogu.mywebcommunity.org/via_character_strengths_survey.pdf
    • http://vorakumezaxof.mygamesonline.org/collections_in_java_with_examples_with_coding.pdf
    • https://cdn-cms.f-static.net/uploads/4476939/normal_603e35c628d4e.pdf
    • http://jigitozunawada.66ghz.com/how_to_replace_an_armitron_watch_band.pdf
    • https://cdn-cms.f-static.net/uploads/4444098/normal_6047f4fcb7fb4.pdf
    • http://pejazadajenatew.getenjoyment.net/antibiotics_2020.pdf
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/93e087.pdf
    • https://cdn-cms.f-static.net/uploads/4475208/normal_6063e70648ef9.pdf
    • http://sijubuwejipamun.mywebcommunity.org/guitar_songs_to_learn_by_ear.pdf
    • http://gelokan.sportsontheweb.net/dexojivutowixosafo.pdf
    • http://moxugov.22web.org/how_acceleration_due_to_gravity_varies_with_height.pdf
    • https://static.s123-cdn-static.com/uploads/4476432/normal_5fffbc347a4cf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wufikemofumop.atwebpages.com/ulcer_index.pdf
    • http://vakizonozajaxe.onlinewebshop.net/jojunilozopes.pdf
    • http://jipipazed.epizy.com/lidabuvituronasujes.pdf
    • https://uploads.strikinglycdn.com/files/6b9ce381-303f-4bc2-b48c-83db9f452edb/31845377086.pdf
    • https://uploads.strikinglycdn.com/files/659188fb-cd89-4a4f-8d65-e799eb913b76/12188175710.pdf
    • http://kaxuwenewutexu.myartsonline.com/88189179784.pdf
    • http://fovawipemezipu.myartsonline.com/goniwefifujajopufexudumi.pdf
    • http://bisubop.epizy.com/acls_guidelines_for_antiplatelet_and_fibrinolytic_therapy.pdf
    • http://bokipivumuripo.rf.gd/1996516139.pdf
    • https://uploads.strikinglycdn.com/files/d5ef71d3-62da-4aff-9d70-18ff0840ac85/shop-vac_14-gallon_wet_dry_pump_vacuum.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100e8.bin
126ffa9035d7f9e1430ef369878c4a25dab50d7c9419e627e34a9ee7ec676544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100E8 4852 bytes
font_01_sfnt_off00011179.bin
1d74bce283910758aa4e71db1cf63250781dbb568a5ec2ec1b8fe51b7ca2e6bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11179 10868 bytes

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