Malicious PDF — malware analysis report

Static analysis result for SHA-256 acdb699d6458b097…

MALICIOUS

PDF

91.5 KB Created: 2021-03-24 03:01:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3efdd727e207840f1b911ecb6e8448dd SHA-1: 44816714c74a16815a3053e3e4e462e9dfce1f8f SHA-256: acdb699d6458b0976d0fc82e83638595addd4cb3d0098d20c01b1070c3b3e366
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7608

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 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
  • 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://seumenha.ru/award?keyword=architect+portfolio+sample+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448536/normal_6053748d3f7df.pdfIn PDF document text
    • https://babaperivagam.weebly.com/uploads/1/3/1/3/131379833/9960066.pdfIn PDF document text
    • http://pifafixejizigu.scienceontheweb.net/fopugazudadakobi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476007/normal_5fe45ef73fe13.pdfIn PDF document text
    • https://mafadojidakiwo.weebly.com/uploads/1/3/1/8/131871721/f9a8bdc96bdb.pdfIn PDF document text
    • http://lotukaguw.sportsontheweb.net/86459157349.pdfIn PDF document text
    • https://vuguzunorofina.weebly.com/uploads/1/3/4/3/134322364/1768714.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5fca34e756d12.pdfIn PDF document text
    • https://fizabogozof.weebly.com/uploads/1/3/2/8/132815807/samimejile-nazudaxa-radozamu-gikason.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/71ca6141-e2c2-44f6-8cb0-63f6130138e8/hoover_floormate_deluxe_hard_floor_cleaner_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/taramexemovalagepaluza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6e4d45a-995c-4614-b90b-d4536494fd5e/rukeneradewavuxezemi.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/57189782675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a4f438-d946-490a-a604-337bbb175b25/cant_enable_emoji_keyboard.pdfIn PDF document text
    • http://xenexafa.myartsonline.com/canada_immigration_forms_download.pdfIn PDF document text
    • http://zibelasavu.atwebpages.com/how_do_i_invest_in_a_money_market_fund.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/90888319423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153bbb0c-d5b1-43f6-8add-8c535b594e00/joleluju.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/how_to_work_out_percentages_without_a_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/balemubiwugiroxasijosemal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4d49cc-a171-41c0-b949-225fb0d2f6ea/48226928911.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/36215464087.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14736 5064 bytes
SHA-256: 10b5942f8c12d78b13d96118263776d50a5be92842b86675ac1e0caeed1023f8

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