Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed0e84fac9a7811…

MALICIOUS

PDF

85.2 KB Created: 2021-03-17 02:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 81f5a29ad81adc2dbc79d5b515539463 SHA-1: 32cccaa05a21785a366d98fa56dba52765638314 SHA-256: bed0e84fac9a781170f5444d64b0a77b18c961367ccf5e6088ac33babb49bc6b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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-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://baarspo.ru/wix?keyword=pewdiepie+tuber+simulator+bux+generator PDF link annotation
    • http://vugekowuzujed.scienceontheweb.net/80221985479.pdfIn PDF document text
    • http://giwudogor.scienceontheweb.net/mifinug.pdfIn PDF document text
    • http://vijepuwobewi.mygamesonline.org/jedapafuxofipax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_6050b70aab4c7.pdfIn PDF document text
    • http://palopej.sportsontheweb.net/34914112155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_5fdb07c7056f6.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/botodexotakuxati.pdfIn PDF document text
    • http://vofigasu.medianewsonline.com/jemiv.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/canon_xha1_review.pdfIn PDF document text
    • http://tetiviguxawik.getenjoyment.net/how_do_you_show_patriotism_and_nationalism.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421614/normal_5fee99aee293d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lawaxisagiwog.atwebpages.com/mifuretefo.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/85931643471.pdfIn PDF document text
    • http://nununad.myartsonline.com/college_algebra_questions_and_solutions.pdfIn PDF document text
    • https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_04823c5887d441a1a43453d29ed096fc.pdf?index=trueIn PDF document text
    • http://bumurulepowele.myartsonline.com/rerul.pdfIn PDF document text
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_9c230e4310b7421293dec82dfe00313b.pdf?index=trueIn PDF document text
    • https://ff743420-c5e2-4527-a456-70ddb2a1abd8.filesusr.com/ugd/5178f2_de713e885ca942f688709d6be042ceac.pdf?index=trueIn PDF document text
    • http://totuxivez.onlinewebshop.net/84450871679.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA2 5464 bytes
SHA-256: 0164e91a47a9e7d1cca33a82efe23c534852e132e8de227f5ac2595ac3d98f65
font_01_sfnt_off00011124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11124 11800 bytes
SHA-256: 4a45a396a31a26a4a37b42a80a4ff9b7994ded30f6530e5eea8c5520458e1e9b
font_02_sfnt_off0001396e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1396E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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