Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c09dfe176b5e491…

MALICIOUS

PDF

46.9 KB Created: 2020-10-08 04:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0701c1db435b53902d13403f2e97654d SHA-1: e1fd847667c49263d0c31102d33e3f1f484c558e SHA-256: 8c09dfe176b5e491929dcf52ce0cfa9e6178feaa28bdd6fc4689553e2fd3748b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to distribute further malicious content. The document body, though heavily obfuscated, contains text referencing 'Stranger Things' and a URL, suggesting a lure to entice users to click the malicious link. The presence of numerous other PDF links further indicates a link farm or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=stranger+things+season+3+123movies In PDF document text
    • http://files.stmarknola.org/uploads/1/3/1/1/131164202/002c0d5d.pdfIn PDF document text
    • http://gelar.mwsld.com/uploads/1/3/1/4/131438759/2618080.pdfIn PDF document text
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.pdfIn PDF document text
    • http://defakuvu.piersislandgallery.com/uploads/1/3/2/3/132302956/f4ba6.pdfIn PDF document text
    • http://masej.therecplace.com/uploads/1/3/2/3/132302978/9806006.pdfIn PDF document text
    • https://site-1037075.mozfiles.com/files/1037075/bifusadisef.pdfIn PDF document text
    • https://site-1038796.mozfiles.com/files/1038796/48333229649.pdfIn PDF document text
    • https://site-1042740.mozfiles.com/files/1042740/59523690463.pdfIn PDF document text
    • https://site-1038709.mozfiles.com/files/1038709/vijinoneturosodofi.pdfIn PDF document text
    • https://site-1042740.mozfiles.com/files/1042740/28041247751.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/1/0479/2395/3828/files/the_demographic_cliff_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/luwukuladulivukideguwox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0505/4623/files/camp_chef_pizza_oven_90.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/gifogularodujibamipa.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_off00007947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7947 5580 bytes
SHA-256: 2e8d50faa6f863bd672ab60978341d7dcb52dbb6bbf1ff0b02edf2aff2506e14
font_01_sfnt_off00008c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 10084 bytes
SHA-256: b940908767301c9382cd6cc400b4acaf4c3ada3418c49ba76cbe5cba0a72c9b1

Open this report in the interactive analyzer, or submit your own file for analysis.