Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f89cc2268921ba…

MALICIOUS

PDF

78.2 KB Created: 2021-06-11 04:55:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f04731aa83c8d9e49be3e2a40862a41a SHA-1: a8b82f8713f4ff76558f682f03ee934ce0519cd6 SHA-256: d8f89cc2268921ba957b3fb53faf438f60916dad93882b3ab9c876d46fe2d501
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it's part of a link farm designed to redirect users to potentially harmful content. The primary URL, 'https://pixomot.ru/pbw?utm_term=fc+barcelona+png+logo', is presented as a search result, likely a lure to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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.
  • 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://pixomot.ru/pbw?utm_term=fc+barcelona+png+logo PDF link annotation
    • https://rulotukipaka.weebly.com/uploads/1/3/0/7/130776525/rejenuxofa_jaleduxozuzedok_wosuparug_pizajalusugegu.pdfIn PDF document text
    • https://mafewesoxadix.weebly.com/uploads/1/3/4/6/134697647/2428518.pdfIn PDF document text
    • https://molikosa.weebly.com/uploads/1/3/4/0/134017769/ce892a9973.pdfIn PDF document text
    • https://vukujaxirebes.weebly.com/uploads/1/3/4/1/134108713/kufuverumevekik_wimitaduzi.pdfIn PDF document text
    • https://subonotewus.weebly.com/uploads/1/3/4/3/134347286/1452473.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454163/normal_604792b4e3b57.pdfIn PDF document text
    • https://vipapesad.weebly.com/uploads/1/3/4/3/134369303/8028916.pdfIn PDF document text
    • https://gomosoganerat.weebly.com/uploads/1/3/4/4/134494513/paromirinew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466173/normal_60009003e1646.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369907/normal_5fff6b62c7c2b.pdfIn PDF document text
    • https://likuxosudiva.weebly.com/uploads/1/3/4/6/134603152/923b30400.pdfIn PDF document text
    • https://vobilazi.weebly.com/uploads/1/3/5/3/135300702/sobopa.pdfIn PDF document text
    • https://xoxopazivufa.weebly.com/uploads/1/3/5/3/135398299/japomagizomom-nuxoxumava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_6016233891042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428078/normal_606b6a8ec6233.pdfIn PDF document text
    • https://lenalavawin.weebly.com/uploads/1/3/4/7/134732275/sabidarife.pdfIn PDF document text
    • https://benuwefijazom.weebly.com/uploads/1/3/4/8/134897428/pawelomu-tolagodoluloda.pdfIn PDF document text
    • https://kemudebudejel.weebly.com/uploads/1/3/4/7/134718551/9506696.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
    • http://zatesil.pbworks.com/w/file/fetch/144992970/redream_emulator_games.pdfIn PDF document text
    • http://sodopateduke.pbworks.com/f/doraemon_nobita_and_the_birth_of_japan_2016_full_movie_in_hindi_youtube.pdfIn PDF document text
    • http://tikomegeto.pbworks.com/f/wepuvulesupawinedumur.pdfIn PDF document text
    • http://guleribiko.pbworks.com/w/file/fetch/144663405/plinth_mounted_substation.pdfIn PDF document text
    • http://wuranosa.pbworks.com/f/how_to_consolidate_data_from_multiple_workbooks_in_excel_using_vba.pdfIn PDF document text
    • http://dagomiwavi.pbworks.com/w/file/fetch/145044192/4518442869.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_off0000e653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE653 4676 bytes
SHA-256: 72c965bb6b9c11e934235bbc525819fe20dadcddb1bb5ac78fc7d8b675a020d2
font_01_sfnt_off0000f633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF633 11432 bytes
SHA-256: ce58961c81474879aa0f7cfdb8274a0a936f23b72539b093f5e453a51387dc34
font_02_sfnt_off00011b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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