Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb5ac1eaf594b181…

MALICIOUS

PDF

74.0 KB Created: 2021-02-19 04:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c4746ace558ab3a95501e5a1539961fa SHA-1: 68d100959908a01a56273d8f007cc35e8e7769eb SHA-256: fb5ac1eaf594b181f6d099929f25f6bf6e43af141de1e908cd9e60a50519e905
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to reference the Affordable Care Act, suggesting a lure to disguise malicious intent. The presence of multiple unknown URLs further supports a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=what+is+the+main+goal+of+the+affordable+care+act PDF link annotation
    • http://summer-italy.fun/apokryphen_johannesf6lgc.pdfIn PDF document text
    • https://cdn.sqhk.co/vosizijanad/hjgjdMY/29411740327.pdfIn PDF document text
    • http://copyrightshelpscenters.com/40814395100nb80w.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/jhjc2NF/fixibujufosidosuseramer.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/gjhfgif/rulosugef.pdfIn PDF document text
    • http://freedate18.xyz/wells_fargo_zelle_not_working_todaysyw04.pdfIn PDF document text
    • https://cdn.sqhk.co/votijavos/Nhdjbjg/ducks_unlimited_calendar_2021_minnesota.pdfIn PDF document text
    • http://instapodarok365.site/apple_wallpapers_2020wuv7f.pdfIn PDF document text
    • http://waxawazurutane.22web.org/what_is_burger_sauce_made_of.pdfIn PDF document text
    • http://krokoboko3.xyz/actualizacion_android_auto_mazdazin4m.pdfIn PDF document text
    • http://patavitukazinaz.iblogger.org/zatofizuxarimi.pdfIn PDF document text
    • http://duplicwcnj.space/harrodsburg_ky_police_reportsq4hes.pdfIn PDF document text
    • http://creditactive.info/vegetable_recipes_for_turkey_dinnerfd3tl.pdfIn PDF document text
    • http://dektesheff.xyz/zifuwarapujeneliduvakw3mid.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/faluzotixupi/romilenodizekonolipo.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/classification_of_bryophytes.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/authenticity_50_sheet_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/14027406101.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/58009477410.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/87796697963.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AD 5376 bytes
SHA-256: 1af9997f6bbbd5e940f87596e48f472d34c73ba6c0be984a738ff81ad6762b92
font_01_sfnt_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 10768 bytes
SHA-256: df08e1657aa455726ba1d53e62b67200f210363f8f931d68f86010908744927c
font_02_sfnt_off00010c6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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