Malicious PDF — malware analysis report

Static analysis result for SHA-256 4578c6e75b58dd8a…

MALICIOUS

PDF

47.2 KB Created: 2020-10-15 23:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 35cc790ef5dc0fd2c2dcc554de30c6b6 SHA-1: 15e7489b2361e00f8f68dfc0ce24395ad48a3316 SHA-256: 4578c6e75b58dd8a2bed3a739273850963b128b24ab806462f0ee4c56d24f2ab
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://gettraff.ru/123?keyword=apk+not+compatible+with+your+device In PDF document text
    • https://site-1039804.mozfiles.com/files/1039804/nezakoliwufipowewaxug.pdfIn PDF document text
    • https://site-1039171.mozfiles.com/files/1039171/lawozulujuzegofufetapot.pdfIn PDF document text
    • https://site-1043032.mozfiles.com/files/1043032/genoruxopagabizuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f873ee443bf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f87ccfcb8fe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f8814429528a.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/1441493.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/5650151.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/1128448.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/joliwa-fatosam.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/145769.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/3425761.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/4058666.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/bisofonitakopos-gudawubimoliw-tajabafox-wotifene.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/7d917086-6452-490c-9921-21e1f1609520/dewufaxijezawafumipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/920b9f44-3614-47b4-b8bb-2b1669afbe6f/92235144711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42863cd1-d68f-4266-926f-f1fb0b1bbbec/41269019257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7de4029-2798-49f0-92e5-1606d979c504/61248359702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be763f63-137c-493b-9b69-4ca90cbba46a/43230938866.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A18 5580 bytes
SHA-256: 91bc42cf618ed0c482883fee4c472b7cb0c2ebec0182e9649ecacae1ff339050
font_01_sfnt_off00008cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF0 9980 bytes
SHA-256: b1df55a61e565ee21821be160235fe22f563554d273971c12eec4b975abc82e0

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