Malicious PDF — malware analysis report

Static analysis result for SHA-256 289a295e1975df49…

MALICIOUS

PDF

78.4 KB Created: 2021-06-01 02:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 041ed0f69c0712e086d06d0b5f9dd988 SHA-1: be61a3e09b6b8bda046cbe50e81df9b38c1c93cf SHA-256: 289a295e1975df499096672df567ce7cb1034bfe00c920c872958f68b8ee6457
206 Risk Score

Malware Insights

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

This PDF document is classified as malicious and exhibits characteristics of a phishing or scam campaign. It contains a large number of external links, many pointing to disposable hosting, and one prominent URL suggests a lure related to formatting Android USB storage. While no scripts were explicitly extracted, the PDF structure and numerous external links indicate an attempt to redirect users to potentially harmful content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://garglob.ru/pbw?utm_term=usb+storage+format+tool+for+android PDF link annotation
    • https://xakelagus.weebly.com/uploads/1/3/3/9/133997825/jalewutu-mojagutiralamel-vutisok-dafizutid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413474/normal_604459ca58997.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379987/normal_5ff58d4be9eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_604d192da503e.pdfIn PDF document text
    • https://lonawapusar.weebly.com/uploads/1/3/0/7/130776864/4396079.pdfIn PDF document text
    • https://pekeweluxema.weebly.com/uploads/1/3/5/3/135304067/duzexuditozonov-vimoxamazago-vokaneke-girivepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484641/normal_602c4c489e29a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467027/normal_605f3aaad37aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388819/normal_5fdfd72cdf697.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403819/normal_5fcd458783fdd.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://uploads.strikinglycdn.com/files/74808ffb-bdc3-4fd5-97c0-05224b94dbbe/zidodumalame.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/f/puppy_for_adoption_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9489418-bf7a-4ada-8f56-06e133b95365/elementary_differential_equations_and_boundary_value_problems_9th_edition_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9397a154-935d-4fab-a8a9-d6c38ae4c81b/bolikajekifaxux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03988b6b-3333-439b-9fc7-dd26a18f835a/how_to_fill_in_entity_self_certification_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7cc57a5-9a0a-4c94-81c6-4febe66bd1c6/hafele_door_closer_installation_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c796dfc1-5db9-4eb3-b3c6-8daa73992100/gowuladefetarudelogakewil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7163bcea-c250-4238-8136-9c0825368f20/ripilawovozosebine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d053931-2ad0-4370-9cd1-183ef9add49b/sufedufizenibu.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/f/32929135974.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/f/22610327837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3851069-8f48-4f7e-98a4-787f9d1884cc/57157310509.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_off0000e8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F1 5144 bytes
SHA-256: 67f6501f11692e1681dea2c55f1b01cad711780dfa41e3b2d1b231dc87abf9a8
font_01_sfnt_off0000fa50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA50 10488 bytes
SHA-256: 3122c2f0e7ae5c7a35a9c0337a0db72b57bff57b69c4eed869c48190112f09b3
font_02_sfnt_off00011e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E19 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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