Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da8fb969ea19b0d…

MALICIOUS

PDF

78.6 KB Created: 2021-04-18 02:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fb3b3810d9dbd59950233ef20f83bbc7 SHA-1: eff34944c3faa2ec2da6bc6e3e900a8b47b89b32 SHA-256: 6da8fb969ea19b0d81143de9a72f5784f7e8da73a6c262b4c8a8591feb5bf06a
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, contains text related to 'joanna gaines net worth', suggesting a lure. It contains numerous external URLs, including one pointing to 'xezojetit.ru', which is likely the primary destination for the attack. The PDF structure also indicates it's a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/strik?utm_term=how+much+is+joanna+gaines+net+worth PDF link annotation
    • http://bit7.top/polk_magnifi_max_sr_review_rtingsovzuu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_603abebaa1cdd.pdfIn PDF document text
    • http://kexawez.mygamesonline.org/33250561831.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/rejukided.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/11335728943.pdfIn PDF document text
    • http://letnesil.xyz/lezexakuxafevepavofobutigbjfs9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_602ee4b3a7372.pdfIn PDF document text
    • http://instapriz365.site/recaro_young_sport_expiry_datelybkn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_605d72fd0a8aa.pdfIn PDF document text
    • http://suporefebakibur.mygamesonline.org/dinike.pdfIn PDF document text
    • http://kasyanbeauty.com/sevafewajul1x.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e15e35db-9365-4816-9749-64e0e9e3817a/pezirivemakozesesawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e03a56f-be1b-4fd9-8de9-d91cda081233/does_hopper_3_support_4k.pdfIn PDF document text
    • http://lejovoxi.epizy.com/nukowepugofidufiwixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec24085-a093-4dac-bcab-552cbba90171/recite_quran_in_arabic_with_english_transliteration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b69a8a9-002e-4a73-8104-716d55f0942b/how_to_stop_smoke_alarm_beeping_australia.pdfIn PDF document text
    • http://mutodilevo.epizy.com/chicago_fire_season_3_episode_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/118a4c64-e663-4475-9327-b29c056c3c42/70638400916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51b65145-d3e8-42dc-8e25-62561996bf65/service_engine_soon_light_is_on_nissan_altima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb673f7c-706f-4f0d-b366-42d6de05fb0a/where_can_i_buy_fitbit_versa_replacement_bands.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DB 5308 bytes
SHA-256: ed03a382d1c789d5966a7c87e62b0228bcb61e934cd09ef522a346911bb240b2
font_01_sfnt_off000106d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D7 11184 bytes
SHA-256: cb4e07c74cdc82bb97b737358a7890e16b8823676628719afa3d5f72eeb1206a

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