Malicious PDF — malware analysis report

Static analysis result for SHA-256 592e74accb8c1018…

MALICIOUS

PDF

76.4 KB Created: 2021-03-28 00:50:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a3901e9668cfcdb23d458f7092f6ed80 SHA-1: 8b12d7beb36963cd18edf5398ffab5a21f8e2cf5 SHA-256: 592e74accb8c10189e6286971e319432d5bc736d28c69c826370cb250849deb5
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 0.9997

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://baarspo.ru/123?utm_term=bebas+neue+pro+regular+font+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388040/normal_5fe5a7bc1284c.pdfIn PDF document text
    • https://wawotisusuwo.weebly.com/uploads/1/3/2/7/132741293/novawakun_wuwonadeponet.pdfIn PDF document text
    • https://faperusa.weebly.com/uploads/1/3/1/4/131454178/4704343.pdfIn PDF document text
    • http://savineme.mywebcommunity.org/nalobavuluzikunaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456132/normal_60504aa008f3d.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/dIhjqie/tinugir.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/hhv67ie/93388967472.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/titisaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489061/normal_5ff02a1e90fb8.pdfIn PDF document text
    • https://pasorizafam.weebly.com/uploads/1/3/4/0/134096756/pubujipanatuvix.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hS9Pibb/emotional_freedom_tapping_for_weight_loss.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415964/normal_6033e054f1711.pdfIn PDF document text
    • http://jexekiraj.sportsontheweb.net/wokanewal.pdfIn PDF document text
    • https://debinezituxi.weebly.com/uploads/1/3/4/3/134339783/kaponapapolus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475863/normal_5fcf01ac8cd0a.pdfIn PDF document text
    • https://zujuwaxi.weebly.com/uploads/1/3/5/3/135307850/vijeti.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/6jh5Sid/37393405753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_60582900ec234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424328/normal_60564087794e5.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/5784dfb7-d4ad-4323-a18c-5a6a8d63c453/what_to_write_about_story_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b548b176-060e-48f5-a075-a5d6834a595e/wazejugelajibunirav.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 5260 bytes
SHA-256: cecaadbc2462829df700a6abd8337f759cad2fdd4cb95aaf69a44f9dd2339b2e
font_01_sfnt_off0000f941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF941 12688 bytes
SHA-256: 62fc8b390672077f432bab145bb7f6f02d01d237231bc68186da1b600f3b0d37

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