Malicious PDF — malware analysis report

Static analysis result for SHA-256 8629602c0775a8ec…

MALICIOUS

PDF

79.4 KB Created: 2021-03-05 11:57:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e3e131a876fe8f46c4812ff3863fb153 SHA-1: 4b2a15c9aaefd427503ec07b1183dbd7485b3fda SHA-256: 8629602c0775a8ec59a7b3dff0e46651102863c65052fdbc573528ca01eaacac
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, suggesting it functions as a link farm or a lure to external malicious content. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/award?keyword=ingenuity+inlighten+baby+swing+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409826/normal_60134eead0b88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476768/normal_6029ddbe762db.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/pejamefegeju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482426/normal_602fff3955462.pdfIn PDF document text
    • http://apparently-home.com/87961047157mowvw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381551/normal_60069625492f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408584/normal_6010d3cc9b3b9.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/81700223716.pdfIn PDF document text
    • http://sibogufurab.medianewsonline.com/monash_fodmaps_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462066/normal_600ce025d2c71.pdfIn PDF document text
    • http://detonicro.website/fokasugarukupufexoc7hmf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484820/normal_6014f2b594ec8.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/walmart_black_friday_online.pdfIn PDF document text
    • http://universe1.space/the_road_to_learn_react_by_robin_wieruch5mijd.pdfIn PDF document text
    • http://jukojadijomefar.medianewsonline.com/towezisarasepezam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418579/normal_60397102486be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383689/normal_5fe02ef5d2d6d.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/brand_identity_guidelines_template_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412762/normal_6016c549d472e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gakamaxoluzes.atwebpages.com/lenovo_t420_laptop_drivers_for_windows_7_32_bit.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/el_nombre_de_la_rosa_personajes_principales.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_off0000f68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68C 5280 bytes
SHA-256: a071617fd71e3d53dc8b11789e6b87496c7d0ca3a096a1e52c89447d9087bd81
font_01_sfnt_off00010895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10895 11092 bytes
SHA-256: 8b60bf01bd4eb3b500c497e07eb875f29243e2a1415459f257e5983d57cf83dd

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