Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebee3843c058b1c…

MALICIOUS

PDF

97.8 KB Created: 2021-03-24 20:55:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9944965d8c94bdff20fadbeb348fb4e SHA-1: 43d2dab2a93cefe0693fcfb27535a48a62d88f5e SHA-256: 1ebee3843c058b1cec26282c7a797b2d84e8420c8f1b27dcca888adcd4428bb7
166 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, containing lures related to lottery winnings or parcel deliveries. It includes numerous external URIs, with a primary one pointing to a suspicious domain that appears to be part of a link farm. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jumiwimov.ru/wix?keyword=fayetteville+super+regional+baseball+tickets
    • http://3gusevshop.website/76002015698b5alk.pdf
    • http://trychambre.xyz/23347081493imb5d.pdf
    • http://wodekenizowa.getenjoyment.net/nusonuvipapelixu.pdf
    • http://terakusinuw.mypressonline.com/68081373258.pdf
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/modalor.pdf
    • http://potusowo.22web.org/tenulozatekezejegi.pdf
    • https://xixefofitajeres.weebly.com/uploads/1/3/3/9/133999179/7627928.pdf
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/fedadakosira.pdf
    • https://gofupadosu.weebly.com/uploads/1/3/4/8/134853885/lusosu-jorododifofoza.pdf
    • http://denarop.22web.org/21255915426.pdf
    • http://tadosuzewamu.medianewsonline.com/96274229792.pdf
    • http://bumawusuka.mypressonline.com/altered_carbon_season_1_episode_10_reddit.pdf
    • http://lnstagramcopyrightcenter.com/55537745928a2o3m.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/67b277eb-0ab5-497d-b784-ced14e7b301c/why_wont_my_beko_washing_machine_door_open.pdf
    • https://s3.amazonaws.com/gotitibekovi/dell_inspiron_n5010_bluetooth_driver_for_windows_8.1_32_bit.pdf
    • http://fefukidu.epizy.com/49452108545.pdf
    • https://uploads.strikinglycdn.com/files/90c49a9c-6117-43f7-9d10-b1d72109d3e0/sc_driver_license_renewal_fee_california.pdf
    • https://uploads.strikinglycdn.com/files/5ee4fe63-78e7-4f6e-9836-ceea89b8d101/sat_subject_matter_test_dates.pdf
    • http://zuxulabawiba.rf.gd/lamijidononewexugewes.pdf
    • http://belibivizonojo.myartsonline.com/47486323600.pdf
    • https://s3.amazonaws.com/tosego/kubewakanutixonetewa.pdf
    • https://s3.amazonaws.com/tobovunoberiki/ligowudax.pdf
    • https://uploads.strikinglycdn.com/files/1686631c-2bd0-4bb5-8761-01255817c851/jogidakufaxuj.pdf
    • https://uploads.strikinglycdn.com/files/0061fbce-8cbb-422a-a749-ebd1e3ca1d09/we_were_liars_online.pdf
    • https://s3.amazonaws.com/pilazi/audacity_for_mac_os_high_sierra.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013d51.bin
d09318c27280c6407396bfed94825d8f8a593dba7774e806a928b754044f5d7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D51 5420 bytes
font_01_sfnt_off00014fe8.bin
18a021c3184c90a46deebc4c97982cb0f4696f987e8548f4f1bd535402316892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FE8 11664 bytes

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