Malicious PDF — malware analysis report

Static analysis result for SHA-256 80338e5c040e8dc9…

MALICIOUS

PDF

70.7 KB Created: 2020-11-14 13:01:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c85abdb86531689955ab8d13ab48dcf8 SHA-1: 7da3a7bdf889c20b1283dfa84491ef717ba1972b SHA-256: 80338e5c040e8dc9eba08dea19d329593e2deaa236fa370358297faa487abe10
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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://traffine.ru/123?utm_term=y+tu+que+sabes+netflix In PDF document text
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/4436206.pdfIn PDF document text
    • https://suganolorifumu.weebly.com/uploads/1/3/0/8/130814011/rarel.pdfIn PDF document text
    • https://vikuxujawud.weebly.com/uploads/1/3/4/5/134515409/0943df29774b9a.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/sevufujarix.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/sanoja_nubolipe_vomigowod_rezixusimafo.pdfIn PDF document text
    • https://bokasopuvozanib.weebly.com/uploads/1/3/4/3/134319525/gemagotodotef-gebilagoz-jigeb-tobapamiloxu.pdfIn PDF document text
    • https://bevatisaxotel.weebly.com/uploads/1/3/4/3/134378436/gagogipuvinuk.pdfIn PDF document text
    • https://nulakumoxuguv.weebly.com/uploads/1/3/1/8/131871970/188256.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/mpm_accuflex_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ee92f45-bb7f-4e06-982f-ec76c94756c9/hoover_anniversary_self-propelled_windtunnel_bagged_upright_vacuum.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/49489116142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff511280-656f-4368-9fa9-7d52b6487bca/october_31_1971.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/rewugewusota.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/26031101489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8795467a-5435-41a4-8d21-2ae51c28a6cf/aldol_condensation_product_between_f.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_off0000d5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B5 4960 bytes
SHA-256: 8207bada296f3c3368e91e5fde3a1b59d6ea13dd00ccb9fa0ae6260131ea25ac
font_01_sfnt_off0000e6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B4 11696 bytes
SHA-256: 38fc4903bd05d2c5030b90fca7e210a4af6ea21994fc7c268997bac9029ab249

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