Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad2e5d32d6d6c34…

MALICIOUS

PDF

36.7 KB Created: 2020-10-13 20:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9175c7e2ae548f58bd0eb2e24f4afacd SHA-1: f08feb571b266bcb8c63778e6f05496bd95fde45 SHA-256: 4ad2e5d32d6d6c34d66c03daaa78fe2b405bd26378c0723ad66d9337cc35b4b9
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://cctraff.ru/strik?keyword=sticker+creator+apk+pro In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1392291.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/b628c54eef4e3.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.pdfIn PDF document text
    • https://site-1044515.mozfiles.com/files/1044515/kijarakizibe.pdfIn PDF document text
    • https://site-1048530.mozfiles.com/files/1048530/lajetekexekebukokazerem.pdfIn PDF document text
    • https://site-1040312.mozfiles.com/files/1040312/71438695607.pdfIn PDF document text
    • https://site-1039597.mozfiles.com/files/1039597/lujifipujutovoviloledirex.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bamudepekepa_setumazowido.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://uploads.strikinglycdn.com/files/70a6d4ec-3705-4be2-8b35-5bbb984f5d67/salorezibogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1a2392-a84b-4e0e-8c7e-1ce08165902b/dolukikiginimelobebose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a93f29-3a9c-4d3f-b2d0-4710f24b73a6/fexegotabodisijarujumofew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4b4fb85-6b7a-43a8-87c6-f91723790fa5/tigofopul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2a0ec3-55d8-463d-a9dc-7506de2aa21f/zagoxalewafebubixubigu.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_off00004751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4751 4568 bytes
SHA-256: 2e1b1cb1504029f15feddc2abce4c9d83ffceaa228698d472dad6143d83c8cfb
font_01_sfnt_off000056d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D5 9848 bytes
SHA-256: df073d305b2e8e6f148f1ceb70c65ced281c118a6176af26625516bdae2a207c
font_02_sfnt_off000077f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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