Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48cc91b0757d3ee…

MALICIOUS

PDF

75.4 KB Created: 2021-02-22 16:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1300f8c7cb9a4d5035839055cdc9de1b SHA-1: 04af3d10134d87607ecc39c138df08fe89bc7127 SHA-256: f48cc91b0757d3ee3140745983499e5239a1b0a44639d129cdd6b5f75b0b050d
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, suggesting a phishing or SEO manipulation attempt. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous external URLs points towards a potential download or redirection mechanism, possibly involving JavaScript within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://maypoin.ru/123?utm_term=old+yeller+dog+book PDF link annotation
    • https://degapepe.weebly.com/uploads/1/3/1/8/131856160/jivaganeteniliti.pdfIn PDF document text
    • https://nuzaguwimera.weebly.com/uploads/1/3/4/4/134492670/moguzefezodidoxa.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/vilunabuvodar_butikajed_somupixusabuvu.pdfIn PDF document text
    • https://jetosiwer.weebly.com/uploads/1/3/4/7/134767378/4832895.pdfIn PDF document text
    • https://binenivav.weebly.com/uploads/1/3/4/5/134516867/lodojadunuref_bokodevumi_puvixaxanileta_xujasum.pdfIn PDF document text
    • https://fuzitadixasixo.weebly.com/uploads/1/3/1/3/131381677/1829235.pdfIn PDF document text
    • http://ecoterritory.store/36111473421lb417.pdfIn PDF document text
    • http://opensoda.pro/179838746pqae4.pdfIn PDF document text
    • https://dugegedop.weebly.com/uploads/1/3/4/3/134338267/5383856.pdfIn PDF document text
    • https://merokiniperoj.weebly.com/uploads/1/3/4/6/134691049/gaxomesatopaxan_sabumalobeg_vagelegul_bijirevu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dixaleko/wupifoliwasobobevepov.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/exterior_plywood_sheets_b_q.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/68345677477.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/81313298878.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/gazudo.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/zerosejoniwetabaki.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/video_twitter._com.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_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 4936 bytes
SHA-256: 3374b861e2dc56556f41d5859476c5e97e16aa75e3b9af50af35c436d9b8256d
font_01_sfnt_off0000fc0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0E 10764 bytes
SHA-256: e6896646424baff2c92aabc60d0f42e3fd44e45e855b73f52e4e75ccba2361ce

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