Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f77078bd596291…

MALICIOUS

PDF

103.9 KB Created: 2021-03-18 10:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2bf0189da384694e78c75b942160d54 SHA-1: e31c11d9f0d0e6f3cdc59bb9bb2425e65e723edc SHA-256: 01f77078bd5962913962ce8b47dc8ce58f506c3d12a4b5cfb922ef3f0326b02b
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with attempts to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://botokaw.ru/strik?utm_term=how+to+make+natural+hair+colour+at+home+in+hindi
    • http://jesofoma.getenjoyment.net/american_heart_association_acls_book.pdf
    • http://mavafesumej.medianewsonline.com/zefadopekum.pdf
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/nezewupanabuw.pdf
    • https://sezebotari.weebly.com/uploads/1/3/1/6/131636698/22f21a811546.pdf
    • https://jigaxokere.weebly.com/uploads/1/3/4/6/134622899/3555791.pdf
    • http://malanefire.sportsontheweb.net/how_much_does_a_250cc_dirt_bike_cost.pdf
    • https://xilamexazoleguj.weebly.com/uploads/1/3/2/6/132695560/6904083.pdf
    • http://kixiwogazu.sportsontheweb.net/dyna-glo_kerosene_heater_rmc-55r7_manual.pdf
    • https://cdn-cms.f-static.net/uploads/4470975/normal_60298f2800a7d.pdf
    • https://cdn-cms.f-static.net/uploads/4483075/normal_602576b1f3048.pdf
    • http://fedorahosted.org/lohit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tujesipi.epizy.com/nizowafi.pdf
    • https://s3.amazonaws.com/votawawo/93667206568.pdf
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_f580651146034c65b56ee277d9de4fee.pdf?index=true
    • http://zenakezogutomu.onlinewebshop.net/how_to_calculate_compound_daily_interest_in_excel.pdf
    • https://s3.amazonaws.com/wewuxuviwar/aoe_iii_full_version_free.pdf
    • https://s3.amazonaws.com/midipes/7427657625.pdf
    • http://zukevajisuw.rf.gd/xowokuposujapo.pdf
    • http://jugoribomepi.rf.gd/prevent_button_submit_form.pdf
    • http://mutifesojare.epizy.com/eurovision_2019_armenia_performance.pdf
    • https://s3.amazonaws.com/vexosafugunu/8490196357.pdf
    • https://ecc4b077-82d2-4cf1-ad45-1e482560a890.filesusr.com/ugd/5d7ac5_88215694bc504954ab0589d9cb4b0ea2.pdf?index=true
    • http://zozikidifalov.epizy.com/baddy_oosha_timba_lowo_remix.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off000161f1.bin
7e02329f60f56e64d798dc5186b17e10d745a226ab75fb1e7145f2b980437861		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x161F1 14592 bytes
font_00_sfnt_off000113c7.bin
ce6adde7816ad9972896b03b556ecfea27b6c1d31b106bb9e9783583eb18a7ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113C7 5000 bytes
font_01_sfnt_off00012498.bin
6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12498 3720 bytes
font_02_sfnt_off00012ffb.bin
52079f8ee56263b2b4726080d37e1a21715a7a9d40be1d32893836a14b7a9b62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FFB 10592 bytes
font_03_sfnt_off000153f0.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153F0 4324 bytes

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