Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff37150d0f0176a…

MALICIOUS

PDF

78.6 KB Created: 2021-04-03 23:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 6192e2208dbf673fbc4a617372e5df57 SHA-1: 5a3569103788f34bf4dc67cc7ca0ba47067a3172 SHA-256: eff37150d0f0176adde02d9be437e5f9d4e1e86aa13d79699e979c52b7d5bd61
126 Risk Score

Malware Insights

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

The PDF file contains a URL that is flagged as malicious and is associated with a phishing lure regarding PlayStation network sign-in errors. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential theft. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/aws?utm_term=playstation+network+sign+in+failed+ps4+ce-33992-6 PDF link annotation
    • https://kanapefa.weebly.com/uploads/1/3/2/7/132740413/3002206.pdfIn PDF document text
    • https://wibafodutaselo.weebly.com/uploads/1/3/1/3/131380847/f3cd7680296.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_1116212101eb4127b13b49e5f59bf5e4.pdf?index=trueIn PDF document text
    • https://dd67658a-cc17-4e1c-bca5-42bf299a485b.filesusr.com/ugd/07a440_9d106e944edf4399ab4a549f1f94663c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e581c0e-f7bd-413a-95bd-59452b3fd1e6/what_bike_lock_does_the_lockpickinglawyer_recommend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20ff686a-6146-4788-be5b-64edadca9b7f/2174240255.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/60749019162.pdfIn PDF document text
    • https://03df74f7-894d-4c84-999e-da2b33eb06f5.filesusr.com/ugd/4c7733_704da5367a0c4078901bf33f22a6aad8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/xogoviwedologofezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ad0128-05b4-4637-a125-5f1f8e571460/brother_hl-l2380dw_connecting_to_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56940ce-d133-4402-9045-765d24ea07d0/dyson_v11_animal_cordless_vacuum_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1912414-dd0c-4a58-89c7-612a1abe0beb/how_to_run_wow_on_a_bad_computer.pdfIn PDF document text
    • http://fawivemepogu.epizy.com/word_pairs_exercises_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbbc4174-ea53-494b-812e-6e4b25b053c6/dolphin_gauges_speedometer_wiring_diagram.pdfIn PDF document text
    • http://tuvatopuvonu.epizy.com/arpa_dolomiti_meteo.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/kawifetemuzolim.pdfIn PDF document text
    • https://8fa10226-37c2-454d-bd65-ced70ecbf0c4.filesusr.com/ugd/c34aa9_15ffab6b94b0406ba4fd8ec662e02381.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_off0000f215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF215 6308 bytes
SHA-256: 11751207b40d15f3cead9fdc1c29f8710f9c8259e799d43f77801933355d3a47
font_01_sfnt_off000107bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BC 10972 bytes
SHA-256: 41ce231706e1468c7dac56e818656ca615e41cbe73b030b3f7b108a5f2e13725

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