Malicious PDF — malware analysis report

Static analysis result for SHA-256 412c9ab4c5c4b84a…

MALICIOUS

PDF

76.7 KB Created: 2021-05-14 12:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 110a29db75044ddd3ea07ad5061e7c0f SHA-1: 964768db04e27b9ea4a4964379f05950008f8773 SHA-256: 412c9ab4c5c4b84a5e15c136aa21ff144214b7996a537db76269b06cbbdd9621
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which points to a suspicious domain ('botokaw.ru') that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, suggests a lure related to appliance troubleshooting to encourage user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://botokaw.ru/strik?utm_term=kitchenaid+superba+gas+oven+will+not+heat+up PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416786/normal_6023a4ae4c65e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366398/normal_5fc597a045b91.pdfIn PDF document text
    • http://pakatisijelu.iblogger.org/the_power_of_one_quotes_movie.pdfIn PDF document text
    • http://lebodomutejom.22web.org/glencoe_advanced_mathematical_concepts_precalculus_with_applications_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_605127a08b2c1.pdfIn PDF document text
    • http://bitejes.iblogger.org/ratifying_the_constitution_worksheet_answer_key.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/2da4e831-c098-4ea8-a6f7-db16a8d73fe0/how_to_troubleshoot_a_maytag_bravos_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/can_you_forward_mail_overseas.pdfIn PDF document text
    • http://luzadewo.epizy.com/kogetudemuj.pdfIn PDF document text
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_fdec81c2a38e4cb996a2fb3934752aca.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7835e17-0c90-42de-a5e2-e4398b5a6b4c/gupotimuzepawisunijo.pdfIn PDF document text
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_e93574d629094ba890c4e0ffd760e50b.pdf?index=trueIn PDF document text
    • https://edb7bb8d-792a-4213-93ec-7f573d37cc74.filesusr.com/ugd/bfd504_68030108e096477ab061b79d980bebcf.pdf?index=trueIn PDF document text
    • http://pojesonedako.epizy.com/pusos.pdfIn PDF document text
    • http://wevefudizob.rf.gd/catalogo_avon_16_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bf0eda0-a07d-4f84-a216-e1856ae1fc6b/what_to_do_in_first_90_days_of_new_job.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/welerireve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c46c5d9e-1fc8-4878-b7bf-8aabd941194e/nekekezovozadexisozidovu.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/best_bose_901_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b0e0d0f-2036-4da4-9d5a-11c65222b53e/vovelikipanuvuvojumes.pdfIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_b88063d017ec452e9c90fca83a539ea6.pdf?index=trueIn 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_off0000ed6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 5596 bytes
SHA-256: 06ace64169b25d9663de46b133a7a45d1c1d4b593effaaa9acce587009d58e2c
font_01_sfnt_off00010080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10080 10796 bytes
SHA-256: 508e8b2df510690ab0b646659a900a57ecd10acd2975a2e6aaaec2aefbcfedb4

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