Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4969b9c4148fa7…

MALICIOUS

PDF

48.9 KB Created: 2020-10-25 18:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f093173d13d928a2c825837dbf27e52e SHA-1: 9951413765bf2e6dab015310098f7e6faa3a8de2 SHA-256: 2b4969b9c4148fa7a027a2ffbcf8141a207da8f01b73d5a56bba6860d01b6d11
204 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.
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=the+green+mile+parents+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_5f8a45a221284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f8823749aa45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_5f926a204099f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f88fb67389f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f88948f65156.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/5850aaa8abe05c6.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/zobutokajapu.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/bodepoxuzuzuwoliw.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/nebiremopokexukite.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007d37.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007d37.bin)
    • https://uploads.strikinglycdn.com/files/806a4a4c-56e2-4f9c-a09b-ec526249a416/26059911724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ad786b-c0d7-421b-b5dc-c579dd499f54/wemup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e656b4-62e7-4d1a-8c2d-3b24f86cfa3a/sexijebepokaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/687c23ec-8cf8-4640-a9d0-a6fa3d49ca63/thanh_kinh_cong_giao.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fe6ae5b-7660-4728-a814-16da57714243/philip_kotler_marketing_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3805dab6-89aa-4527-9a64-1bf004bf418d/90352519518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74c26d67-b250-423c-9ec0-2ceff633eea7/mibezulagutolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9300d93-731c-44d5-be3d-47b2b6b3d736/63887306865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9893/7783/files/bafang_mid_drive_bike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2348/0987/files/forza_horizon_4_apk_game.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/79747581184.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/guia_ceneval_resuelta.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/dekovimeminulolifelawe.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/lumusibefokaxowa.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_00_sfnt_off00007d37.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 5320 bytes
SHA-256: b7cc93443c93259b027ae9749fedc383c766d060896748db7c56bd1db23526cf
font_01_sfnt_off00008f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1D 11456 bytes
SHA-256: f4e5193077a57ba8ca6910faba38657d6d212a661dda347a2b13227c30d1820d