Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ee9165e09fdca8…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 03:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b62312592fbbeb82eb9bb5336e7016f1 SHA-1: 243b2f4d2c744fb36942b42184f5b894851c76bd SHA-256: 48ee9165e09fdca832825f6306decf2ab88ae81b9b953fc24bdbc78d14ddb73f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=blue+buffalo+cat+food+feeding+chart PDF link annotation
    • http://zomesotemaxage.66ghz.com/vufusipuvaf.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/hiig8Y6/line_driver_signal_booster.pdfIn PDF document text
    • http://sawotawigusewon.22web.org/dafurikanejelike.pdfIn PDF document text
    • https://rapovadok.weebly.com/uploads/1/3/4/7/134705404/xojatezejizelul.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/iiaqLij/kuvituxanomuruda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5fdaef93a7500.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/e1heNqm/tumibusexisifirire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_60267be9ae900.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/OhcKXji/download_free_notepad_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/wixumenez/jex7ibE/97227365779.pdfIn PDF document text
    • https://rakuwogu.weebly.com/uploads/1/3/4/8/134858672/8565753.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446646/normal_5fe2e447e7373.pdfIn PDF document text
    • https://cdn.sqhk.co/jaruxabal/ggdHjh8/xonix_pc_game.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/hjgfugg/tiles_for_kitchen_backsplash.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/58868630837.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/multiplying_and_dividing_polynomials_practice_worksheet.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_off0000e175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE175 5292 bytes
SHA-256: 11e8312d2624d4f31e4da974c9c6cf25ea88e6a49e40975a80e278c1c52ca2c0
font_01_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 10324 bytes
SHA-256: 2983af3db260f93215cf95350811664bde44164288630dac5f465e74e60af923