Malicious PDF — malware analysis report

Static analysis result for SHA-256 efc4e07eb6c1fe23…

MALICIOUS

PDF

170.5 KB Created: 2021-03-20 02:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7a638a22eac68883997bd283d47db3db SHA-1: 15435d9a5572a0b4bd154a3ad9bd96d0078e6769 SHA-256: efc4e07eb6c1fe23d26abd531fcde953d89628e294da88b955cc23e7d8917867
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a site impersonating a government scheme application form, likely to trick users into downloading further malicious content or divulging sensitive information. No scripts were extracted, but the PDF structure and embedded URI strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://fokemale.ru/award?keyword=pradhan+mantri+awas+yojana+application+form+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411915/normal_6041df6d53de5.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/fhhZmMf/umc_el_paso_ysleta_clinic.pdfIn PDF document text
    • http://piwulag.sportsontheweb.net/meaning_of_tav_prasad_savaiye.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/giuy6hc/bokimal.pdfIn PDF document text
    • http://dufigep.scienceontheweb.net/1982110955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402261/normal_603e2d6d136d5.pdfIn PDF document text
    • http://sazulido.medianewsonline.com/basic_phonetics_and_phonology.pdfIn PDF document text
    • https://cdn.sqhk.co/nugopanage/VjdijGY/riwivovovarabonisaba.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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://uploads.strikinglycdn.com/files/06c909d7-a855-45cb-a1db-2089449d0cfa/faxirudedob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b92c7b8d-95b5-40a0-ba3d-d1be36e685c2/90376395076.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/2006_dodge_stratus_engine_2.7_l_v6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b01260-5b30-4d24-9d35-0eedab0b8d14/como_son_los_sintomas_de_la_neuralgia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde9e860-bb90-4f22-b382-46661a886c96/rekijemumas.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/husky_weight_distribution_hitch_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/xitanejoxebez.pdfIn PDF document text
    • http://moxuzaridob.onlinewebshop.net/47466699587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f31e1f2-ace1-4a28-ad8e-d08af4075df3/best_bible_commentary_books.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/acetal_plastic_sheet_suppliers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba62874c-ca98-4a6b-8ccc-e0ee9799d816/jarorisudefeled.pdfIn PDF document text
    • http://zonafikepejese.onlinewebshop.net/1659552056.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00025be3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x25BE3 22956 bytes
SHA-256: 6fbb2c10cf77766fdd7dcff9ea299d8a28704b0d5900d87278ab42f4fc34f44f
font_00_sfnt_off0001f64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F64F 5336 bytes
SHA-256: 83b1be011f7baf32d3df76ff9628aa631eec596e48d905cd58bc8df3ce067d96
font_01_sfnt_off0002084e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2084E 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off000213b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x213B1 10824 bytes
SHA-256: 35ce156858d953bb41441d0deb4af2aa5b9a017c7510c166b150b14f366bd063
font_03_sfnt_off000238cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x238CD 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_04_sfnt_off00024de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24DE2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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