Malicious PDF — malware analysis report

Static analysis result for SHA-256 80462b271711f652…

MALICIOUS

PDF

74.6 KB Created: 2021-03-04 02:41:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 625abee8681746a290c015cbfa2ef000 SHA-1: 7f75be1dbe9b787f18b3e511b53eeab5e6616365 SHA-256: 80462b271711f652ce62d506592732f5316a539ea948d62d8a2afaaa24618d16
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 a link farm or SEO manipulation tactic. The embedded URLs point to various PDF files, likely serving as lures or redirects to malicious content. No scripts were extracted, but the PDF structure and numerous external links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=bionaire+bw2300-n+manual PDF link annotation
    • https://dowolozudatu.weebly.com/uploads/1/3/4/0/134000293/68bb05f6c9.pdfIn PDF document text
    • https://dupukixulin.weebly.com/uploads/1/3/2/6/132681516/sodirugumebijum-juwitarugi-wijuk-kidafimefebi.pdfIn PDF document text
    • http://jawazapefaxuzit.mywebcommunity.org/fubafopejosupifogasosen.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/dojinagulojuxe_koluvogatogapuj_jirimubujud.pdfIn PDF document text
    • http://nonowun.mywebcommunity.org/jobodixoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403938/normal_603dd0b36ee2e.pdfIn PDF document text
    • https://nenejafaf.weebly.com/uploads/1/3/5/3/135393494/dagowigimuki-motojo-terinezel.pdfIn PDF document text
    • http://lokubakodo.getenjoyment.net/35976439339.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/28c068f7e6c.pdfIn PDF document text
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/8435307.pdfIn PDF document text
    • https://lekomuge.weebly.com/uploads/1/3/4/7/134773229/59e1f4e478.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/80374982046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449987/normal_601bb2e759bd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_60172db626e08.pdfIn PDF document text
    • https://bixikobitil.weebly.com/uploads/1/3/4/5/134525497/53359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421781/normal_6011ca8e121b1.pdfIn PDF document text
    • http://xubajur.mygamesonline.org/lidubotisebuwenuromeduma.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/3027156.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/iioJieI/44986592733.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudupaxub.myartsonline.com/honda_rebel_250_weight_limit.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/gubazuliba.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_off0000e5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E3 5404 bytes
SHA-256: 73f51f239154d9663eff3258170de2501445d35c4e257521e56cb726c47e9cf0
font_01_sfnt_off0000f844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF844 11168 bytes
SHA-256: cd0aa9c188e20bf303a844e5cdc9e9720fc19287be3c0d5f41ab65546045eb89

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