Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8ab45bd09c6b3c…

MALICIOUS

PDF

37.0 KB Created: 2020-10-25 20:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 1974f407b41fcbd174473774feaff119 SHA-1: fd24b6096ed155b228366558741bdf8fb81d5673 SHA-256: ad8ab45bd09c6b3c88e2f6c4603ba0ba761c46a2d0cb636ecba53d6925d02174
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=mbox+2+pro+user+manual In PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/fukufevezujorimapa.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/e12bea6.pdfIn PDF document text
    • https://jajoteraluwem.weebly.com/uploads/1/3/4/1/134108878/d5c4afb4fa1.pdfIn PDF document text
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/nemogagoponop.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/kazuwob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f9309a977e0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f86faa49045f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f8ce0650c36b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5f936b2ce073c.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/bupajebofenitive.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/e7642.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/memek.pdfIn PDF document text
    • https://lusogovo.weebly.com/uploads/1/3/4/3/134358567/7131209.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/pagogilibarij_duzilifad_rejewepupew_nosenodikigib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/continental_industrial_hose_assembly_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5978/1023/files/new_year_sermon_topics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d170495-8cb9-41c8-9c44-b32338846b82/3643272094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00fab74f-64c6-47ca-a330-f25a848b13a2/44631276601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dfca7a6-0e22-4bbf-ae5a-1273b67b7d09/kelolomig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f69b69f-e205-48d0-b2ce-266cbff19854/82950954184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/bubble_bobble_descargar_gratis_para_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8723/1674/files/olimpia_splendid_unico_air_8_hp_manuale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2523/5612/files/mn_sp_g_cho_tm_hn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6967/5938/files/corporate_culture_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6525/2769/files/1960s_trivia_questions_and_answers_printable.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_off0000544f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x544F 5308 bytes
SHA-256: 4e3bf2d066c7e92787d80792d33a30e0cd524057fe851afaa5de3d94420fd2c3
font_01_sfnt_off0000664c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664C 9480 bytes
SHA-256: e73b785000288fb938bfe778279948f0f1b352f52ba455442b79579e37768b76