Malicious PDF — malware analysis report

Static analysis result for SHA-256 470163f4065015ce…

MALICIOUS

PDF

73.7 KB Created: 2021-03-17 04:17:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d6937cf9afd7f10a8dec28ddf4f6758a SHA-1: 9dadce095391578b5f1701937920f7ca79319b47 SHA-256: 470163f4065015ce7542e48a8d5b14b51a2baa799e75ce60c7ce632053e5132a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9956

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://xezojetit.ru/wix?keyword=silence+is+consent+shirt PDF link annotation
    • https://mewerenazedesaf.weebly.com/uploads/1/3/4/8/134885553/wikizufonisijagav.pdfIn PDF document text
    • https://nuzoligul.weebly.com/uploads/1/3/3/9/133997434/nuzakepowezer.pdfIn PDF document text
    • http://firejowetawo.iblogger.org/shortcut_keys_and_full_form_of_computer.pdfIn PDF document text
    • https://zifosugelupoz.weebly.com/uploads/1/3/4/6/134693972/6455514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491670/normal_601fa83de0324.pdfIn PDF document text
    • http://sagiberufof.22web.org/how_to_repair_pool_pumps.pdfIn PDF document text
    • http://omynutural.space/inside_out_theme_song_piano_sheet_music62rxl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389604/normal_602be36e372fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_5fd3553369a8c.pdfIn PDF document text
    • http://adanakebap.org/18497977569p2ip.pdfIn PDF document text
    • http://hesap-al-sat.com/912952305575c95z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414491/normal_5ff01968528a2.pdfIn PDF document text
    • https://vexixizeled.weebly.com/uploads/1/3/1/3/131384380/2796095.pdfIn PDF document text
    • http://scandisvet.ru/swords_and_sandals_2_full_version_download_macu4rql.pdfIn PDF document text
    • https://wafitaweligu.weebly.com/uploads/1/3/4/5/134587259/3170791.pdfIn PDF document text
    • http://vkysnaya-eda.site/how_to_fix_a_leaking_samsung_dishwasherjt1x3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_f7143ef280694aa5a012cf2c576aac7f.pdf?index=trueIn PDF document text
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_4ca9f11b721d43ac8e9b23cb5369771f.pdf?index=trueIn PDF document text
    • http://moborudazijom.epizy.com/zapewetefezojoja.pdfIn PDF document text
    • http://xaligapuk.epizy.com/78036904537.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/65729139233.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/jovukugebito.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/seporewefozepopifi.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/79767982166.pdfIn PDF document text
    • https://52ed6390-a5c1-4502-9f93-599cf6d98ad1.filesusr.com/ugd/f7fbc8_a6525833d804458c9eb0862c49d0505a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/nazomesijuzetupimogogesok.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_off0000e111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE111 4780 bytes
SHA-256: 21e72e300e95ee677e1474545247a7c9992c2a9bd3d93beb68b0686ab9f510c1
font_01_sfnt_off0000f14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 11612 bytes
SHA-256: 24cda44780f39a280d93a2cfbf8561d928e5b75b33a9a254fa53a860ed8ffbd8

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