Malicious PDF — malware analysis report

Static analysis result for SHA-256 9072fe9a6654ba3f…

MALICIOUS

PDF

81.8 KB Created: 2021-05-23 20:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 350f709251d6ccc0f4be4384480cf9eb SHA-1: c2dd395a1fa49863b3b135db082ab2fc94cba628 SHA-256: 9072fe9a6654ba3f6c4b02f1972edf5640bbc919b9e771081a92f16b5855fd16
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application T1059.007 JavaScript

This PDF document exhibits characteristics of a phishing lure, specifically by presenting a fake CAPTCHA or human verification prompt to deceive the user. It contains a large number of external links, many pointing to S3 buckets, suggesting a link farm or content distribution network for malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://lozipotod.ru/strik?utm_term=to+kill+a+mockingbird+vocabulary+chapter+20-25 PDF link annotation
    • https://ponuwusareti.weebly.com/uploads/1/3/1/6/131636782/jepiwavexefudubebox.pdfIn PDF document text
    • https://kifenefaru.weebly.com/uploads/1/3/4/3/134327755/3b51d598a.pdfIn PDF document text
    • https://mizeximo.weebly.com/uploads/1/3/4/2/134265944/611250.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/fijisun-zotabajorijuz.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/votawawo/74254129972.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/21581022582.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/mutatuwufovasosewa.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/construction_guide_osrs_runehq.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/fnma_homeready_income_limits_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/comrade_in_america_movie_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/argument_essay_outline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/alliestein_v0._5.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/pesipuxakutemutizafix.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/instagram_android_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/is_tai_chi_better_for_you_than_yoga.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/ge_front_load_washer_maintenance.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/81152421166.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/kaiser_aluminum_corporation_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/60061671492.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/mfj_259cm_antenna_analyzer.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/greatest_love_story_album_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/60646455786.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/fedex_international_freight_customer_service_number.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/autocad_lt_2014_update.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/item_crafting_guide_poe.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_off0000fcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBD 6052 bytes
SHA-256: c979e1e25a98d147d7f17e5fe14e31c806c816b055b002c59094fa52cb45b344
font_01_sfnt_off00011141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11141 11760 bytes
SHA-256: 7fbe522cf0ba3e3603c89e3732023f4b1457facba38fe19254fbeb1e1d2f2c1b

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