Malicious PDF — malware analysis report

Static analysis result for SHA-256 24b738274062da4c…

MALICIOUS

PDF

80.7 KB Created: 2021-03-20 20:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13969beb1cba26360fb6be01bcd60207 SHA-1: e7b2e7d01fcaaa7092ac753a247c8a43315f75b0 SHA-256: 24b738274062da4c645aa1b694ec00da5b568f73721b69ba264d4833965eaffd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a primary focus on directing users to a website that mimics search results. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics suggest it's designed to exploit users by leading them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=the+price+of+glory+verdun+1916+pdf
    • http://bawawurojetuve.22web.org/95747269138.pdf
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/dc974d3e.pdf
    • http://zalixunepujo.22web.org/how_to_hang_pictures_on_sheetrock.pdf
    • https://mosugomepa.weebly.com/uploads/1/3/4/0/134096926/1754601.pdf
    • http://balegetiwep.mywebcommunity.org/gomuserarakoguguwobax.pdf
    • https://lekipavovat.weebly.com/uploads/1/3/4/3/134332936/2a42b54e3.pdf
    • http://xuvaxujogilo.mygamesonline.org/zofogos.pdf
    • https://vujojetusifej.weebly.com/uploads/1/3/1/3/131398487/1fa6e1cb7.pdf
    • http://gofadivus.mygamesonline.org/how_to_balance_fe3o4cofeco2.pdf
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/1476216.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/magapeguwabe/aifmd_reporting_frequency.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/i_ll_fly_away_violin_sheet_music.pdf
    • http://fusuxitizubuka.epizy.com/breathable_awning_groundsheet.pdf
    • https://s3.amazonaws.com/limepusotanal/87203194927.pdf
    • https://s3.amazonaws.com/doxifuba/bose_700_user_manual.pdf
    • https://s3.amazonaws.com/viwoxuz/can_you_put_vinyl_stickers_on_your_car.pdf
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_dcf91108d18f4cda81ac4bbea66f648e.pdf?index=true
    • https://s3.amazonaws.com/vebisop/kjv_bible_verse_about_love_is_patient.pdf
    • http://vujiwexamofone.rf.gd/tefofinibudokavezivi.pdf
    • https://s3.amazonaws.com/buganabowumujef/lenebolorugon.pdf
    • http://zetipetarot.rf.gd/another_one_bites_the_dust_bass_guitar.pdf
    • https://s3.amazonaws.com/xoguwavosuje/geruni.pdf
    • https://ac911ccd-a574-46a9-bbb3-57bb927ff796.filesusr.com/ugd/2735c9_b65032754c954cda9d712558af646cb5.pdf?index=true
    • https://s3.amazonaws.com/jonora/madovonozijetido.pdf
    • https://s3.amazonaws.com/mojivikapeti/bearnaise_sauce_nutritional_information.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd12.bin
128e70f403b583a750d243d00a13e6dc75b5e18689a6e4e8d0af5624efd1cefa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD12 5500 bytes
font_01_sfnt_off00010fdd.bin
05e2cd1100253b0e5ffb286da3b09e57c1f49a4a0ed5cd93f3c1642a3261518b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDD 10992 bytes

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