Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5111be19dd6592…

MALICIOUS

PDF

42.5 KB Created: 2020-10-04 06:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b9a4d8601a967161a91096bb7e6a380 SHA-1: bd3db3d3505d6a9d2f3ad95fa845fe3ccdb6685f SHA-256: 1e5111be19dd6592fba600cde85aab65d656faf421b315ed11d62e3492cccaa9
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://ggtraff.ru/pify?keyword=address+for+luzerne+county+recorder+of+deeds In PDF document text
    • http://files.lalobascatering.com/uploads/1/3/1/3/131383514/8445be6206f.pdfIn PDF document text
    • http://berapemun.targetedsalesservices.com/uploads/1/3/0/8/130874631/pumipofuwebeto.pdfIn PDF document text
    • http://zuwunagin.sile765.com/uploads/1/3/1/4/131407629/5658883.pdfIn PDF document text
    • https://site-1038990.mozfiles.com/files/1038990/43075657128.pdfIn PDF document text
    • https://site-1042658.mozfiles.com/files/1042658/bizasezivapuvevoxojof.pdfIn PDF document text
    • https://site-1043260.mozfiles.com/files/1043260/63473028980.pdfIn PDF document text
    • https://site-1036911.mozfiles.com/files/1036911/77196485206.pdfIn PDF document text
    • https://site-1036750.mozfiles.com/files/1036750/zokebuxexoparutokanupu.pdfIn PDF document text
    • https://site-1042844.mozfiles.com/files/1042844/28265465803.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9820/0481/files/passion_lauren_kate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6870/5954/files/uno_attack_game_card_meanings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9999/4778/files/define_mythical_normal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC1 4780 bytes
SHA-256: 8cf5403266650c511629c39b8342bcf32f14448e8ab892c80b517e53503dff82
font_01_sfnt_off00006b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 10596 bytes
SHA-256: 1e5ce7310d9ceed5e4a13fb25a74e8632d350c50d130cee145121eaeb9e3a0fa
font_02_sfnt_off00008f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F38 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71