Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a15b5c7dda6b75c…

MALICIOUS

PDF

93.1 KB Created: 2021-04-21 18:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5b11f2b53eafef29d08525a08df41571 SHA-1: 32954bc125516d3a4fc3b4ebfece151529d8d620 SHA-256: 2a15b5c7dda6b75c52fd5e6b8db89ce8ba3634a4f4ecedca0b6d33d8784bb514
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to direct users to further malicious content or phishing pages. The presence of 'utm_term' parameters in some URLs suggests tracking or campaign-related activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/strik?utm_term=the+art+of+communicating+thich+nhat+hanh PDF link annotation
    • https://cdn.sqhk.co/fumodolanes/jcggggR/satom.pdfIn PDF document text
    • http://ostanni.fun/kogama_parkour_wood_crazy_gamesb0gyh.pdfIn PDF document text
    • https://dedotomonifagax.weebly.com/uploads/1/3/1/6/131606429/bukez_likogep.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/xBwygd6/6611890136.pdfIn PDF document text
    • https://faboduvo.weebly.com/uploads/1/3/5/3/135343103/3068178.pdfIn PDF document text
    • http://azakalaza3.xyz/cancionero_infantil_para_preescolarxqee0.pdfIn PDF document text
    • https://tikoresi.weebly.com/uploads/1/3/0/7/130775690/dorofiguvudo.pdfIn PDF document text
    • http://marketitaly.pro/assessment_report_pec7cruf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_6026932447294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_6065d9d566160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_605ccd48336d9.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/xodagapizitoxizgxfe.pdfIn PDF document text
    • https://ludojuvixodezo.weebly.com/uploads/1/3/1/8/131856813/nakepapuwikez.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/hjfgcjd/steven_universe_colouring_book.pdfIn PDF document text
    • http://rkconstructionsucks.com/how_long_does_it_take_to_churn_ice_cream_in_an_ice_cream_makerh951z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418188/normal_6049948478633.pdfIn PDF document text
    • https://cdn.sqhk.co/japuwejede/GifjeP3/gizoserasoral.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480728/normal_5fe931efec8a2.pdfIn PDF document text
    • https://vifiboreb.weebly.com/uploads/1/3/5/3/135349596/jiwigidimon_mofabunozedusol_nazos_gatevinamewukax.pdfIn PDF document text
    • http://teren.fun/49399982122jmdma.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/14de97fd-8d9f-455d-ab92-496d1e51b874/tomudoteniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3da9a6-398e-47f1-bdc0-f84f7531fa35/casio_fx_cg20_emulator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5838711-6ffb-44e5-94c3-3a5b11cb6d19/95953247950.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_off00012edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EDB 5032 bytes
SHA-256: 5c823260c40a3dd81d7b7d2dfcf24ae6074a5ae3024bde8255c53a01242af3c6
font_01_sfnt_off00013fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD4 10840 bytes
SHA-256: 8a438e26f66a24289c3b653a8fbd4aed40d3670d6119483598e35fd53d0daf5f

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