Malicious PDF — malware analysis report

Static analysis result for SHA-256 552914693f5c9cad…

MALICIOUS

PDF

52.9 KB Created: 2020-10-28 22:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2293596c40d5ff584e957eb0447ce88e SHA-1: 31cc8e7aeb074a49e16d339cebb97c0cbc0adefb SHA-256: 552914693f5c9cad62c4cffd5f1330887efbdb620eb484be6ccf01658aa6e539
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://cctraff.ru/aws?keyword=brownie+outdoor+adventurer+badge+requirements+pdf In PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/8088738.pdfIn PDF document text
    • https://giledaxije.weebly.com/uploads/1/3/4/3/134312043/4851937.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/7227024.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/jutebiver_biwilojorofofi_tuzivigori_gidikabipapid.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/0a8e56cc.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/a2e8d.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/dutuxixo-pagubapalelubu-zeserekunavox-kixipabolot.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/zomabevugeb-mavabotumozip.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/7719937.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/zopidoguj_mogub.pdfIn PDF document text
    • https://pipalilivo.weebly.com/uploads/1/3/4/3/134310902/7515644.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/d51091c6dd1f.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/bunoribali-mufamodokoxij-xoxaxilunaja-fuxulibavilali.pdfIn PDF document text
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/9b2880.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008e1f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008e1f.bin)
    • https://uploads.strikinglycdn.com/files/6ad11c9e-7fa7-4b9b-acac-345c6e435957/43026208586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70f44aa4-e084-4f38-b811-8a1e1df21a0a/pigiduduzizugujesugeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b5b520-c762-4fb4-a90f-d8aa78b41d8b/xirexodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3da2137-a44a-4b21-89d9-5f55a1d3c802/hp_probook_6440b_teknik_zellikleri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1a9f43-d706-4bc3-8165-bd99fc725339/ride_the_tiger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95b192c8-f872-4161-a402-be75cc5c8eda/xebidezirilawulumod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c083d4-a6e0-4f3b-a7f6-47d0fb1fc889/high_cartoon_characters_t_shirt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0be255-dedd-46a9-9767-d8d51037d00b/aprender_sueco_portugus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62a636e8-86e5-4402-9a35-0a084f1117c1/71950566583.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_off00008e1f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1F 5796 bytes
SHA-256: 99f55897e70a7a09e754c2187106834d556c2497b78fd7f6b4d3ac959b3159ab
font_01_sfnt_off0000a1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D8 10468 bytes
SHA-256: 4bc5068964f78aa2cef25b890ada93602fef6cdbf58ab1ea891c4a2532ce376c