Malicious PDF — malware analysis report

Static analysis result for SHA-256 4648cce7d05cdb5e…

MALICIOUS

PDF

43.9 KB Created: 2020-10-15 18:12:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d8c6ec2dd7875c2a65585db324f7631b SHA-1: e1680898ef04ed3c5e29efeb4550468346828555 SHA-256: 4648cce7d05cdb5e3fee0bc704ef48a3fa6dfea68044eedf0575a50be69a09ef
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=how+to+rearrange+pdf+pages In PDF document text
    • https://site-1040888.mozfiles.com/files/1040888/jegefubiwamixemilez.pdfIn PDF document text
    • https://site-1036935.mozfiles.com/files/1036935/wikukipe.pdfIn PDF document text
    • https://site-1039350.mozfiles.com/files/1039350/paint_net_descargar_para_android.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/8689906322.pdfIn PDF document text
    • https://site-1043759.mozfiles.com/files/1043759/xoneribew.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/lisojozijarotijulowobudir.pdfIn PDF document text
    • https://site-1038608.mozfiles.com/files/1038608/33228178927.pdfIn PDF document text
    • https://site-1041207.mozfiles.com/files/1041207/11477177915.pdfIn PDF document text
    • https://site-1043365.mozfiles.com/files/1043365/xewudimukusokajopexiwi.pdfIn PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/45590504338.pdfIn PDF document text
    • https://site-1040521.mozfiles.com/files/1040521/51480337342.pdfIn PDF document text
    • https://site-1040373.mozfiles.com/files/1040373/6100523170.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/lopakexinamozamig.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/fc249d4e635320.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/tabutekes_mekiwodeguliva_dasatakikenit_vedatebodameju.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/3043573.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/4628562.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/womanawiwurek_dipewububexuti_tudanado.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/xopevu_vilugarokobijos_fimorekon.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/rukazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/89487243153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3482/9222/files/jisibus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7048/7702/files/reddit_ask_science_fiction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9435/3088/files/tuxekusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8764/2267/files/ina_garten_cranberry_relish_recipe.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_off00006e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4A 5232 bytes
SHA-256: 871372bd0d1c99b8a3cc04f9bdcbdd321bdf41f17df09dfab5674dbb68f5c951
font_01_sfnt_off00008031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 9896 bytes
SHA-256: 46aed33ebb11fdc9090a3995c18945089f5228c9ed3dd5cfdb11fd74993a1df3