Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3abebf42cec552…

MALICIOUS

PDF

88.5 KB Created: 2021-03-15 19:53:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03d4f1ff082499e1a4145b39e708a895 SHA-1: 48655d51948e7585a7f8668aa2324316cb35f5a0 SHA-256: 2d3abebf42cec5526a4d9982100fa1c05d833b9c3d026028045b795feb68117b
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the links and the heuristics point towards a malicious document, likely distributed via spearphishing, aiming to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://druttle.ru/123?utm_term=cashflow+quadrant+book+pdf PDF link annotation
    • http://opensoda.pro/doxagafqsw4r.pdfIn PDF document text
    • https://limotesatax.weebly.com/uploads/1/3/1/8/131871768/133de9d20e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405945/normal_6006d0bbb6b42.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwosexed/FjjHAjj/24482964131.pdfIn PDF document text
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/gekexegov-zozazibapogogov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418587/normal_5fd9c6713372c.pdfIn PDF document text
    • http://jogemijafiw.22web.org/58734097143.pdfIn PDF document text
    • https://cdn.sqhk.co/tobamozusaj/Rhe7jiW/37663638388.pdfIn PDF document text
    • https://cdn.sqhk.co/ferorigife/CMwib8A/derwent_watercolour_pencils_72.pdfIn PDF document text
    • http://help-nanny.site/nomarepovugudirosokuvawit11g9.pdfIn PDF document text
    • http://openplafond.xyz/the_christmas_caroler_challenge_winner1cqon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451750/normal_5fdb8fadbf30a.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/phhgijc/uefa_champions_league_2019_results_and_fixtures.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403271/normal_60087dd85a9ad.pdfIn PDF document text
    • https://wisufomerimugil.weebly.com/uploads/1/3/4/0/134016782/1c73c.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/OiiibRu/rome_total_war_2_cheats_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_6011fa30b3746.pdfIn PDF document text
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/bazex_nafogixilif_lolodivesavuxaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://goduzidexemave.epizy.com/philips_air_fryer_hd9216_manual.pdfIn PDF document text
    • http://kupikobu.epizy.com/dugig.pdfIn PDF document text
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_4207def816f34a97a81964578224c292.pdf?index=trueIn PDF document text
    • https://dacf5b84-f80e-4bd8-bb7f-22aad20a1cd8.filesusr.com/ugd/285be4_69b9a0a32d1542d4a603f247fda3902b.pdf?index=trueIn PDF document text
    • http://wosamufudov.epizy.com/94732507525.pdfIn PDF document text
    • https://6b137298-3864-41c5-aaa3-11744000c3c2.filesusr.com/ugd/b916f4_26983b9893804bc8bf30676acae6b0cc.pdf?index=trueIn PDF document text
    • https://0029a690-d003-4268-bdc7-e74daa5a0415.filesusr.com/ugd/a4b355_04c93dffa9934c98b275f170abfe490b.pdf?index=trueIn PDF document text
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_023d4384746b4a2c837ac8c0118021e3.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96A 5456 bytes
SHA-256: 68b2be4f9f46ea69601c02da646f06b703535b92f55aef9720ff440ed7996f35
font_01_sfnt_off00010bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BF1 4284 bytes
SHA-256: 13a4c3882f05e816c4fa58a288011a5a22b8954dc926510551c739476dcf863e
font_02_sfnt_off00011776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11776 10984 bytes
SHA-256: 6f3e57ef6ab4d8c6b74569f95011749f1c4efc918ee61064f38bda2afaef1eaf
font_03_sfnt_off00013cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CEE 16284 bytes
SHA-256: d4179d4d238f994aecba9e96a0bf2522fdc3342286ef37af10cfbbafa5fd03c0

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