Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c01a32649e07982…

MALICIOUS

PDF

52.0 KB Created: 2020-10-26 03:08:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e0e84622597da28b4fb714bfc6460126 SHA-1: f6905829833d91aa019f0da0cb7be9bbbb51481e SHA-256: 8c01a32649e07982924cc7545f6487d2ed36cb1a72fae271858922db3497bd0e
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.me/123?keyword=traducir+documentos+pdf+gratis In PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/dutemexanotemad-lirakivenona.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/5282072.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/8948163.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/fodebadelakefi.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/9369973dfc6.pdfIn PDF document text
    • https://rezomiwutamanap.weebly.com/uploads/1/3/4/3/134362688/borewesaxotepa-wijojikogagaket-gudozuz-wemirag.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007e6f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007e6f.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000b432.bin)
    • https://cdn.shopify.com/s/files/1/0462/3876/1109/files/mawifos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/fabius_plus_xl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7249/2198/files/mega_man_x_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6739/0120/files/60137220868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9094/5215/files/77228443290.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/41684179543.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/bubuvolizoroju.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/semetug.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/rexef.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/fopaxusefevanupezaf.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/fafasavujex.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/jejuzavafuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/mirodimuraleberunisuto.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/18145907140.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/84013410055.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/entrepreneurship_development_small_business_enterprises_charantimath_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/colonialism_and_nationalism_in_india.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 extracted file (font_01_sfnt_off00007e6f.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7465 2828 bytes
SHA-256: eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4
font_01_sfnt_off00007e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6F 5276 bytes
SHA-256: d3647b7ca30ab33baeefc7dc3cd3074c489c5a718a2cc498bbfbcfa7929673fd
font_02_sfnt_off00009038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9038 10996 bytes
SHA-256: 875854e60c91b6b461f2d62f9ac6a865ab67993647b0bd6fa258636d2d71d806
font_03_sfnt_off0000b432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB432 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361