Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d30de2cb956af8…

MALICIOUS

PDF

41.7 KB Created: 2020-10-29 14:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 07abb415711475c45613b924685d8795 SHA-1: e7e80cbfaa36496788cbbab3d564431e9a35f4c7 SHA-256: 09d30de2cb956af8b0f454769cedc42fb4fe1ef6299055c81d0ceb355bec2cdd
94 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, one of which, https://cctraff.ru/aws?keyword=maytag+refrigerator+owners+manual, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to reference this URL and a benign-looking document title, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/aws?keyword=maytag+refrigerator+owners+manual In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/4183132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378827/normal_5f98fbb380612.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/1/0431/0053/6986/files/18634794606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4d71abb-f0a8-4810-b199-9c2109b23640/43766918631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3739/1558/files/succession_and_biogeochemical_review_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b353b1da-7733-45a3-bfc9-ad4ca3187889/62048680924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e75973-f352-484b-a9af-abe02345c738/57525066439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8122/8982/files/jonuxegagotaselepegifelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1adc94f-d667-4e1d-b654-873c8acf267b/78487155215.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_off00006359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 5284 bytes
SHA-256: 6083f5884bf5d759700d9b4124943c41cab233f86606366e521bafa661258884
font_01_sfnt_off00007567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7567 11136 bytes
SHA-256: aa13e4c5593284549ad2f190bceb0550aa69b40bee63d38f5604d807358c4f1f