Malicious PDF — malware analysis report

Static analysis result for SHA-256 800d096bb000c6ad…

MALICIOUS

PDF

68.3 KB Created: 2020-09-29 21:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3588a0917ca5d2158cc44ebfdd1278ae SHA-1: d0c6376db22a4b8c1516e2510def4dbd8d2759fa SHA-256: 800d096bb000c6ad17ad7434a9f3959126a4e60714ebcb1e2e0f6d32d8b12c69
154 Risk Score

Malware Insights

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

This PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also hosts a large number of external links, suggesting a link farm for SEO manipulation. The embedded URL and the document body text, though partially corrupted, indicate an attempt to disguise the malicious link as relevant content. No scripts were extracted, but the presence of malicious redirectors and the link farm pattern strongly suggest a phishing or scam attempt.

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=facing+cranial+nerve+assessment+pdf
    • http://fokorubuz.opnrc.org/uploads/1/3/0/8/130813042/fazeku_sedax_kisaburifizexeg.pdf
    • http://files.arllawfirm.com/uploads/1/3/2/6/132682862/vunemilujuxobi.pdf
    • http://pogez.allegraclark.com/uploads/1/3/0/7/130776485/cce768a1283eb.pdf
    • http://bojimev.filmtest.net/uploads/1/3/1/0/131071073/welavumezolazaz.pdf
    • http://lawafavin.jillcranwellwarner.com/uploads/1/3/1/3/131379866/pobabuva.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/84733854324.pdf
    • https://cdn.shopify.com/s/files/1/0449/4350/7615/files/nagezanofuk.pdf
    • https://cdn.shopify.com/s/files/1/0471/0629/3910/files/androcles_and_the_lion_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0481/4569/4869/files/divon.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/63269069485.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/cemento_dental_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0447/3529/9738/files/domain_name_server.pdf
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/46542054934.pdf
    • https://cdn.shopify.com/s/files/1/0431/8311/2341/files/piroxagelutitokuseganut.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca8e.bin
dd3d1f685e25bb752ae1ca68277913fd08bf47b782ad4ac77aec256b8ec312b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8E 5488 bytes
font_01_sfnt_off0000dd31.bin
ed02a0fa45965fad81326404ab704a3aa76508bf8e026164afa5f06d695b201e
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD31 12096 bytes