Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a0dc1108b52b02…

MALICIOUS

PDF

47.3 KB Created: 2020-11-08 16:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: a84cf611eb11d99b0a60716435df0f65 SHA-1: 24c0a995fb823ac8e519a64a3ee272220dee2990 SHA-256: b1a0dc1108b52b02b8cbbb42c1913749f9c2663e1c432105682dbf8adaea0417
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://traffking.ru/123?keyword=gta+5+mod+apk+data+download+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424985/normal_5f9cfa952e9b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383801/normal_5fa0ffbe0746e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5fa5799bc0001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381551/normal_5f918eb81b715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f9ac7fedf32b.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000790c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000790c.bin)
    • https://uploads.strikinglycdn.com/files/bf843d24-4fe3-494a-ae48-89d01d811f55/uconn_graduation_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/29301678987.pdfIn PDF document text
    • https://pomutap.files.wordpress.com/2020/11/sky_high_full_movie_in_hindi_free_download_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/50933412226.pdfIn PDF document text
    • https://nijakinap.files.wordpress.com/2020/11/fujuxaduwel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68417a70-f112-4716-b0ff-ad20efdd229c/michael_jackson_say_say_say_lyrics.pdfIn PDF document text
    • https://vasukobemuzo.files.wordpress.com/2020/11/14912563054.pdfIn PDF document text
    • https://xewuripew660320655.files.wordpress.com/2020/11/74859251399.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/vibinofa.pdfIn PDF document text
    • https://dexorufokep.files.wordpress.com/2020/11/72002038413.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.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_off0000790c.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000790c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790C 5320 bytes
SHA-256: 52b3e000fbf18bfcd625c8db6eab29760b1492c37fe99eb14d45b2724b0fa258
font_01_sfnt_off00008b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 11284 bytes
SHA-256: 8658fe7b360a8c3a2f093a27fcc0181afae5c92a83312b83b48536ab5e08dd9c

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