Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ba105357b0e6f6…

MALICIOUS

PDF

37.4 KB Created: 2020-10-14 22:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6ea134a43c0c886ad6006e30fcf2a627 SHA-1: ec0fb8c34992e7d0461222312184e38beb661bf3 SHA-256: 26ba105357b0e6f67b2e32edf6cb069e57580edea7d75f38beb79a385308ff7d
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=cartographies+of+struggle+mohanty+pdf In PDF document text
    • https://site-1040559.mozfiles.com/files/1040559/98659321217.pdfIn PDF document text
    • https://site-1038938.mozfiles.com/files/1038938/fadutuwexixegobe.pdfIn PDF document text
    • https://site-1038744.mozfiles.com/files/1038744/xekejugu.pdfIn PDF document text
    • https://site-1038547.mozfiles.com/files/1038547/42757341697.pdfIn PDF document text
    • https://site-1039460.mozfiles.com/files/1039460/lemela.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4d5351fbb209c0.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/40734964013.pdfIn PDF document text
    • https://site-1040134.mozfiles.com/files/1040134/35725086572.pdfIn PDF document text
    • https://site-1040141.mozfiles.com/files/1040141/bakasezexidujawuwelonifig.pdfIn PDF document text
    • https://site-1036898.mozfiles.com/files/1036898/rifimoj.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/rezukiwamid.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/164082fef46.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/movew.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dbbd04.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/rikupeg.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/2a18c715-d624-4ed1-a154-f883882e1d9c/38460190553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ec88c6-1483-40a2-9b22-dba872f776c9/47618910515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd89321-8a84-405a-8274-0a7dfdc74862/22919151916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a9e6a72-d971-4b9d-9ee7-656495238256/62231242297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c5a428-7abc-4be2-86f6-7e128e296aee/71290803968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea94445-0ed4-411f-8c30-330c7031a692/xifadusobuxujipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbe49794-cb1b-4f9b-a4b5-ca98346aa434/9400784349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3df700af-7dce-469f-bc49-38af35244d32/79391728385.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52F4 5464 bytes
SHA-256: 9450a87583b3a19559801240044870b61921b6f72f0704bb53c049a1d95a29e4
font_01_sfnt_off00006573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 10188 bytes
SHA-256: c79b08f27139530d24ac19f83139a6aef1d1b0f175d42cc6654af3dfcdbce4bc