Malicious PDF — malware analysis report

Static analysis result for SHA-256 28dfab38e0520947…

MALICIOUS

PDF

38.0 KB Created: 2020-10-10 11:26:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c5abcf5319d53e61362a208e90762868 SHA-1: e2ec40cce7e86d8ef854b29ee935cd5171ab730a SHA-256: 28dfab38e0520947c8aedd722976e0695f0fbfbbbc8d61e8dff1b7013f535068
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://gettraff.ru/pify?keyword=fluke+322+service+manual In PDF document text
    • http://mizoxu.cgcatogo.com/uploads/1/3/1/4/131453133/datakuzulegote-wowofokuze-tefepuzefalome-kizenox.pdfIn PDF document text
    • http://pekek.labsavvy.org/uploads/1/3/0/7/130740112/ferowilunov_gonefo_zijakamef.pdfIn PDF document text
    • http://lawufu.shadowcreekchoir.com/uploads/1/3/1/3/131381762/056378c.pdfIn PDF document text
    • http://files.holidays-usa.com/uploads/1/3/1/8/131856516/7214887.pdfIn PDF document text
    • http://files.singsingprisonmuseum.org/uploads/1/3/2/6/132695244/tirib.pdfIn PDF document text
    • https://site-1042020.mozfiles.com/files/1042020/vumarulosimomewopalini.pdfIn PDF document text
    • https://site-1037275.mozfiles.com/files/1037275/52023314977.pdfIn PDF document text
    • https://site-1038798.mozfiles.com/files/1038798/39080239965.pdfIn PDF document text
    • https://site-1039612.mozfiles.com/files/1039612/17273189464.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/1/0437/0792/4635/files/globe_life_park_seating_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7092/3174/files/19515258699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c82c38-56b6-48d0-82b6-6eb0971a1a90/sazozuxegowewomerolusob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62803c1-73bb-462f-b77e-06228aa6762c/5561889028.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_off0000550b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550B 5320 bytes
SHA-256: ebcc9de77869fa4fef3442da895b359939b4228b0db6016b853123840d436c7a
font_01_sfnt_off00006712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 10716 bytes
SHA-256: 9a6a75dbae8d44f705cad25b2b871ed90e9b9c156efdda2e26cc0b1440ea27bf