Malicious PDF — malware analysis report

Static analysis result for SHA-256 70271f0f1349fff8…

MALICIOUS

PDF

71.8 KB Created: 2021-05-17 05:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 06808cc8ae3a95ac5fc923f0be38d625 SHA-1: 58eef9074ed903310ea2120ef9b8624838f3b4c0 SHA-256: 70271f0f1349fff808026a5ae54b11048d784246d93761b5572d983fd981b13a
156 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 5

  • 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.
  • 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://resalured.ru/strik?utm_term=what+ink+for+hp+envy+7100 PDF link annotation
    • https://xikoxuzit.weebly.com/uploads/1/3/4/6/134632277/gurakenubud-dojugaso-mugawodemibujug-poxizaselewir.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/hg9hgb4/kopukitozonu.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jZrgjan/xulotisifaxedo.pdfIn PDF document text
    • https://fujikoxeloto.weebly.com/uploads/1/3/5/3/135307408/9280784.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/5b3694f9-4746-4b5f-80c1-41e2fd8d352f/romeo_and_juliet_song_taylor_swift_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/343f8636-c271-46ba-b3d0-cc6cfb159bb4/botiwabepefuxuben.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/how_to_set_up_specialized_speedzone_2.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/analise_combinatoria_morgado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67dbe6d7-1d4b-4042-92c5-50f80559b0a2/47424963787.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/jovaludalaginala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d618872-1594-4fe0-8384-8ac1b09d27ff/how_to_reset_2006_mini_cooper_service_light.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/how_to_get_hp_printer_to_print_alignment_page.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/65526423457.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/best_books_to_improve_sat_reading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4af2b4-c963-4671-873c-a453332c9549/30102677802.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/why_wont_my_kitchenaid_dishwasher_drain.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/75403508744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f257e69-7836-488e-9e4c-3f2a8200f055/how_to_use_golf_buddy_wt3.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/fisher__paykel_dishwasher_dd605_manual.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_off0000db04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB04 5292 bytes
SHA-256: 2b66a507f329a27dc665616300f95d88f5f20db9cf32f4ac38985990da4bc067
font_01_sfnt_off0000ed29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 10884 bytes
SHA-256: 509e02f5c65a02831fc35e08f7f7676acb8508a4494f11c8d74b6bb1cb55e2ec

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