Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b1118fa5d704d4…

MALICIOUS

PDF

46.1 KB Created: 2020-10-15 06:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: cb5619b111e5a36db97e11ed1575dad4 SHA-1: 7d556972fd497602ce76c9f8b02e5343d34ba8c9 SHA-256: c2b1118fa5d704d4cc279498dbef29c421e6ab8659db685388a67b80c3bd905f
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/strik?keyword=tubemate+2.2+9+download+apk+free In PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/jutile_wunanefoxulij.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/278ae4fa7b72c.pdfIn PDF document text
    • https://site-1039498.mozfiles.com/files/1039498/basizomewibubikunosatiw.pdfIn PDF document text
    • https://site-1044108.mozfiles.com/files/1044108/47605020065.pdfIn PDF document text
    • https://site-1037885.mozfiles.com/files/1037885/gamoturovexepava.pdfIn PDF document text
    • https://site-1040101.mozfiles.com/files/1040101/18216293346.pdfIn PDF document text
    • https://site-1040238.mozfiles.com/files/1040238/98530344832.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac0adf9-43f0-468f-9897-feb22fd5cdd7/rozunof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14504c79-e0b9-47ce-bbe6-fca10b80236a/paxesokonovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17fb5038-e33d-451c-890a-8e645ff46bbd/50681261625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/84656774729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/hypothesis_worksheet_middle_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3771/6391/files/44615245266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1074/files/81467074422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3243/7151/files/pepetifafomogifigegojez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5919/0689/files/god_of_war_ascension_voice_actors.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E1 5572 bytes
SHA-256: bbbd06d9f878bc270fe701fb746d2c7713d7df82357fb907dd95c9044deb1c44
font_01_sfnt_off000069c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00007254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7254 10224 bytes
SHA-256: 58f1aec7816ea4d09a3c0e1635b4d866ecf6392ebe450253604222cb2b1feecb
font_03_sfnt_off0000950f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x950F 16164 bytes
SHA-256: 58b04abd4a2cde557a820e918121ec9738f9de37d4949e7b8c9e4ecf18f5695c

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