Malicious PDF — malware analysis report

Static analysis result for SHA-256 55c23fecad82615e…

MALICIOUS

PDF

80.2 KB Created: 2021-04-12 08:35:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4729017d170ac5c4579aed69e661f40d SHA-1: 14c0eb7475474396cb56856b25ad2d0a79d08a94 SHA-256: 55c23fecad82615ed1a5782f84a3c0285cb393437c1318fb541073d0203becbe
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 0.9994

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://ponafet.ru/strik?utm_term=does+swearing+indicate+intelligence PDF link annotation
    • https://jadozuvar.weebly.com/uploads/1/3/5/3/135312187/vedemuki_kowafefavema_jiburegawalu_tisulawupe.pdfIn PDF document text
    • https://bamigabimav.weebly.com/uploads/1/3/1/6/131636977/kowep_kagapomubajubo_rovesaw_famukebo.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/f0hcgc2/vemilitefitajegefoxamu.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/d56dc.pdfIn PDF document text
    • https://cdn.sqhk.co/livulopo/igicY09/79498494574.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/icithi0/skylanders_trap_team_villains_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/ifnLs3M/alarm_clock_radio_amazon_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/dojopaxitovi/dQicidQ/quiz_logo_game_answers_level_retro_3.pdfIn PDF document text
    • https://jajixawu.weebly.com/uploads/1/3/5/9/135992574/beroxazoxuw_bifigiwivu_nutokibef_gagamipunuloba.pdfIn PDF document text
    • https://kiriwalukejogof.weebly.com/uploads/1/3/4/3/134310578/3557a80707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/78247693482.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/soduwutoboluni.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/senior_agrarian_reform_program_technologist_job_description.pdfIn PDF document text
    • https://4fd7ac12-06e8-439c-96a9-7636004ccb32.filesusr.com/ugd/9554ab_2b264813171e462daa03050a902010f1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/dossier_prise_en_charge_formation_actalians.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/a_court_of_thorns_and_roses_book_2_read_online.pdfIn PDF document text
    • https://21036261-01f9-4725-a342-2b8b08d10099.filesusr.com/ugd/d0cbc4_8aeb6975a9af4d398ac13d01aa007d85.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fasudikek/kabuzivegogefaziralaram.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/autocad_versione_studenti_gratis.pdfIn PDF document text
    • https://b24036c1-08f6-4d5b-b8c9-f4c47f26e437.filesusr.com/ugd/ae9acc_3146434317bb4dbe91ed1c4b557e2501.pdf?index=trueIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_b8538710743549fcb6accbeac48a83c0.pdf?index=trueIn PDF document text
    • https://aca292c6-a3ee-4c96-b4c9-db15c8eca1b9.filesusr.com/ugd/cd1d52_75ce1b0f0c6a4ee0a6d48684829b826b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/davubewu/dcicn_study_guide.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f92f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92F 5200 bytes
SHA-256: 281080219966795c133a3709bbc9157036d8313a62fed5a129293f0915471ace
font_01_sfnt_off00010b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B02 11324 bytes
SHA-256: b6cb25691fc6d8c1aac3620fa69f99d0408251bcc084f82765f540bebec09240

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