Malicious PDF — malware analysis report

Static analysis result for SHA-256 025dbf09f78ad99d…

MALICIOUS

PDF

78.1 KB Created: 2020-11-17 02:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b480a807a2935b6ff7ae4cabf2068a85 SHA-1: dc9dbd311358e66c41ed89e6289ae72cb9ee21cf SHA-256: 025dbf09f78ad99d77f0489eee2c8e824b67b5a8021c6329add06c8b459634a9
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=fafnir+dragon+story PDF link annotation
    • https://lapebezufidasaz.weebly.com/uploads/1/3/4/3/134316617/gopipotos-garobutewimozi-lisazesepuza.pdfIn PDF document text
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/namari.pdfIn PDF document text
    • https://xuvetopugoseja.weebly.com/uploads/1/3/4/4/134484667/depupafuw-lubigebis-zuzutekubisopur.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/bofujosipixamepe.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/varogifewan.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/nebewufazodilen.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/a872463c-c911-492f-bcb6-ec905a57e955/xajubenujufakufazukenib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a23331e5-c8d6-4cdb-b1e0-5d83b4f75aa6/2d_animation_tutorial_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e777b6b2-2a44-4bdb-b731-335d633ecc77/thinking_fast_and_slow_chapter_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da6e2ab9-b4b1-47a9-8c85-009e2ebbf931/speed_and_velocity_practice_problems_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/fadusekoxezatoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47ddefde-2075-45a8-abaa-e90f2bd3bb75/let_there_be_peace_on_earth_and_let_it_begin_with_me_free_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/poema_de_rima_asonante.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e81af45-3ed0-47fb-b2dc-12fb1b6be618/lazetat.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_off0000fa44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 5100 bytes
SHA-256: c3846bb64ac1fe33612f12ed14cab4eedbd291ab524dba19f2c584cc1b2e0579
font_01_sfnt_off00010bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBC 9396 bytes
SHA-256: 4bc7305530626e4b9a00357c5267c27f32fb429b1e675b068b891199d2c1b056

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