Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc7ab357e39ce61…

MALICIOUS

PDF

86.5 KB Created: 2021-04-06 20:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 841257b968073d1dbaa7f45735d75e00 SHA-1: b0facb8054f16a7eff1be0239ceb044b58324561 SHA-256: edc7ab357e39ce618cb24fd52a4524a02b7b1fc24ed183243d38da9be24e5b04
156 Risk Score

Malware Insights

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

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 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.
  • 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://jumiwimov.ru/wix?keyword=answer+is+fitness+foxboro+ma+class+schedule PDF link annotation
    • http://italiahot.fun/actualizar_gps_garmin_nuvi_1200_gratis_espaolf627t.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/fJigihi/netogama.pdfIn PDF document text
    • https://cdn.sqhk.co/tetaxekumipi/MiiQjjW/pase_elite_de_noviembre_2020_free_fire.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/nipuvoxedegafoxat.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/english_speaking_eye_clinic_near_me.pdfIn PDF document text
    • http://rubyshup.space/linobaxowopirajojutudulugp70co.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/41483465772.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/hac2hiK/bombshell_salon_richmond_va.pdfIn PDF document text
    • https://cdn.sqhk.co/zanivuwiduvo/fYgiyMH/xurabosebonena.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
    • https://s3.amazonaws.com/sizadagazagaj/marketing_internship_cover_letter_template.pdfIn PDF document text
    • https://6e678f60-abc6-404c-883a-cd1729fdffee.filesusr.com/ugd/e4291f_92fe0755236441639dd585d176b0478e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/telasebisu/is_rayovac_a_good_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/62830907799.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/kuzalenuro.pdfIn PDF document text
    • http://vogapodidojuguf.myartsonline.com/34887541271.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/browallia_new_bold.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/davulunuzanaluwuditalofes.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/faxadabosuxuzik.pdfIn PDF document text
    • https://b998fa74-583e-446a-a2a7-67f41460fdb2.filesusr.com/ugd/e081f8_f1df4dba043944d094c04e5aadeca474.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10198 5432 bytes
SHA-256: 4226d25b6b7f6619d5587e1a6481cdc4ddb39c5d95a07400a9c1dd5a9e177659
font_01_sfnt_off000113e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E8 12128 bytes
SHA-256: a9ab0653582a3b27472a8415405cf2bab6829d41446d1d63cd11e64f3ce696fb
font_02_sfnt_off00013ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CE9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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