Malicious PDF — malware analysis report

Static analysis result for SHA-256 060585786d09b1a8…

MALICIOUS

PDF

47.5 KB Created: 2020-10-11 14:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 7f1d280aff76d06ea8e0d0102978b63d SHA-1: 101d7224867fb5f2f68796def9384a9797ad59e3 SHA-256: 060585786d09b1a8fff026bd504c9608a5cb8e9ed221a1eb659c721a4b8b7f7d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users to a potentially harmful site for phishing or other malicious activities.

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://gettraff.ru/strik?keyword=formula+fao+oms+para+gasto+energetico In PDF document text
    • https://site-1037103.mozfiles.com/files/1037103/57170965629.pdfIn PDF document text
    • https://site-1038992.mozfiles.com/files/1038992/66907395233.pdfIn PDF document text
    • https://site-1042780.mozfiles.com/files/1042780/vemudupegaxiviwop.pdfIn PDF document text
    • https://site-1036689.mozfiles.com/files/1036689/63672223900.pdfIn PDF document text
    • https://site-1036639.mozfiles.com/files/1036639/xariguwab.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/1/0478/3498/8703/files/10350749643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0708/6239/files/8896722521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/zagivada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/gevatabanadexuvenanunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3785/2316/files/33797644259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6b8e5a-bc99-444b-a25b-992361b0905a/39981357100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb69cfcd-7fba-4352-8347-81433f14c8b4/39871675161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e5ca356-66bf-4e47-a774-b5f4c73689db/bebixufosebigedimuvorusos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10cd23c6-54e3-41ce-a5f7-e7b49f2b749e/potilo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c77ad7a5-8b74-4145-895b-398a82d2452e/newufizugebeba.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_off00006de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE5 5288 bytes
SHA-256: 60cdfa3c651bd91b20ca000f5e8954dcdc6c15b49d876fc4b8260faed5556598
font_01_sfnt_off00007fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD2 15728 bytes
SHA-256: c6a14cd1d12fc3f736c63889ee19f2732b0358193350db5a6ec4de85ff92e04c

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