Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37a297a46316631…

MALICIOUS

PDF

43.9 KB Created: 2020-10-18 01:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 38760008e67d665c5f032583d67c56be SHA-1: 4a86873f8cb67ef1837e9c6e53b39adcdf3de9fc SHA-256: b37a297a46316631866ddd2f0ec8b30a734e3406316deb2fe6240347bc598005
184 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.
  • 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.
  • 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=lantus+pen+injection+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f89ab2b64b77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5f8a11d43093c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f878f63d3209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_5f8a4b9ca236f.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/ac9149829f3.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/476d4813f.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/kuwekewugi.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/3297630.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/xadipaki.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/nutogeboxisujimerujo.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/lelolipef-zizito-zazigenuwim-buwekunikukel.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376598/normal_5f8b6ad92025c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f88bdf5516bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f8b6302a25e2.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/dc8b1989-169c-4e68-ab3a-17318a07caec/57294089177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d018d68c-05d3-4984-b05b-229ecf76eb79/25721169971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7364/1895/files/widgets_for_android_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/hp_deskjet_3720_all-in-one_printer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/monster_legends_hack_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9846/7229/files/turtle_beach_ear_force_x12_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/86409022947.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_off00007087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7087 4912 bytes
SHA-256: 50214666d50550a3025aa54d1f91a67843640997715e285b28fce106316f6095
font_01_sfnt_off0000814b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814B 9636 bytes
SHA-256: 7f0b927ea9f705b6af98860fc8f1742a30a1ea75757163b20f936a6c8bad5743

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