Malicious PDF — malware analysis report

Static analysis result for SHA-256 5482b1928568027d…

MALICIOUS

PDF

82.6 KB Created: 2021-03-14 12:27:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f0a2cb501a628ddea535657022155ce5 SHA-1: a1ff0c913ca8ae0306b2ea31ad0c2735961a42c1 SHA-256: 5482b1928568027df95b3151638d32ae2c3478df928066f302216f95130d6ae6
104 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a high-confidence ML classifier flagged it as malicious. The document body, though heavily obfuscated, appears to be a lure related to a recipe, directing the user to the external URL https://xajibur.ru/strik?utm_term=how+to+glaze+kirkland+spiral+ham. This URL is likely used to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://xajibur.ru/strik?utm_term=how+to+glaze+kirkland+spiral+ham PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495999/normal_5fdbd102973fc.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/futekefenir20fpv.pdfIn PDF document text
    • http://zuvels.xyz/49757535120if10f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483336/normal_5fdd76ac49515.pdfIn PDF document text
    • http://vigazorafoli.iblogger.org/padajoxalupuxazesaro.pdfIn PDF document text
    • http://save50it.info/love_story_book_online_read_in_hindin9mdj.pdfIn PDF document text
    • http://gufutaca3.xyz/35950417953gpsop.pdfIn PDF document text
    • http://fringigejy.site/metal_gear_survive_maintenance_2020u0k7d.pdfIn PDF document text
    • http://lovemecompletely.com/what_is_the_political_climate_in_south_africa2my1k.pdfIn PDF document text
    • http://realnoe-obshenie.online/blue_eyes_technology_ieee_paperi9eiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453098/normal_604dc45f69c9d.pdfIn PDF document text
    • http://circulyarkadigital.xyz/atoms_elements_molecules_and_compounds_worksheet_answer_keyl64ic.pdfIn PDF document text
    • http://winfreeiphone.xyz/raxovujonudasulaeb0fv.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/sowirutelevolur/dosexukutov.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/what_the_coldest_place_in_the_continental_us.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/86566610315.pdfIn PDF document text
    • http://fikikozazilut.rf.gd/wow_first_aid_guide_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/counter_terrorist_mod_apk_apkpure.pdfIn PDF document text
    • http://gatoruvizuzil.epizy.com/alta_performance_academia_nova_iguau.pdfIn PDF document text
    • http://gokujipavelidaz.rf.gd/best_tabletop_rpg_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/epistaxis_guidelines_canada.pdfIn PDF document text
    • http://mafevela.rf.gd/xifatum.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/best_cheque_printing_software_free.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73C 5328 bytes
SHA-256: cc77b08eb28090c9a2883de3ded1332f14135508ca0238bce8bea57d87409642
font_01_sfnt_off0001093f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093F 11232 bytes
SHA-256: 3696fa30e2ad6d0d526a18995920d210d3a9ddaea753c25fd862bf1eab90918f
font_02_sfnt_off00012efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EFB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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