Malicious PDF — malware analysis report

Static analysis result for SHA-256 952fe5eec34fae6b…

MALICIOUS

PDF

48.1 KB Created: 2020-10-14 23:09:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4cd4b808a92ef63af3536d8caaa3bec7 SHA-1: ec97084d02d9d9ac4bcda3679206f80ea57fb308 SHA-256: 952fe5eec34fae6bb14be4a26d8f2550f08cfe25834e2cf66e0f42ac7770d2de
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/123?keyword=least+common+multiple+worksheet+with+answers In PDF document text
    • https://site-1040438.mozfiles.com/files/1040438/nexejapar.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/78803268110.pdfIn PDF document text
    • https://site-1038313.mozfiles.com/files/1038313/rubepuj.pdfIn PDF document text
    • https://site-1039668.mozfiles.com/files/1039668/dinuneworoxapituwowaniku.pdfIn PDF document text
    • https://site-1037878.mozfiles.com/files/1037878/39617258486.pdfIn PDF document text
    • https://site-1039665.mozfiles.com/files/1039665/78665714291.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/lifise_kamujojekal_setakafonevawib_leliledud.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/1405612.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/7272502.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/gamigakusujusul.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/2a5b38eef3430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f870d027c9b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f872b93da47b.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/1/0432/0893/3540/files/stations_of_the_cross_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1167/8623/files/we_are_displaced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1112/files/hobart_am14_dishwasher_parts_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6870/5954/files/birthday_cake_clip_art_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b73c3f-0253-41d3-89c9-02068caa914f/jogemodewitapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ccefc2-1e5a-4033-9b1e-48b913268770/56447464845.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5152 bytes
SHA-256: 0f8bc14fd5a3f086304bac3976ffc5b43ea0c21fa7b29bf43e16b23b0238c7a8
font_01_sfnt_off000081a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A9 10252 bytes
SHA-256: 9909a6286f9dfa6c3ce7c90026505c951a17edb635d01a1a4e9b1cd02fff10e0
font_02_sfnt_off0000a4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4BB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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