Malicious PDF — malware analysis report

Static analysis result for SHA-256 698764ff25f31667…

MALICIOUS

PDF

48.0 KB Created: 2020-10-08 15:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ea497b71473c3a88ff3711de3fb54acb SHA-1: 7aa4dc96d2730c019abadc3389a0bff968a6b150 SHA-256: 698764ff25f3166742056390548d6d8a3b595f1bb9eaeed0b05fa0797be91d4d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one prominent URL, 'https://ggtraff.ru/strik?keyword=dragon+quest+7+strategy+guide', is flagged as a malicious redirector. This suggests the document is part of an SEO poisoning campaign, using a seemingly relevant document title to lure victims to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=dragon+quest+7+strategy+guide In PDF document text
    • http://files.thepleiadianchild.com/uploads/1/3/0/8/130873989/7541598.pdfIn PDF document text
    • http://files.marketplaceonmill.com/uploads/1/3/1/8/131856232/81011b7c6b7.pdfIn PDF document text
    • http://kigowoti.johnstonlurecompany.com/uploads/1/3/0/7/130775565/435ba2696e8cf7.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/1/0480/7242/5636/files/define_treaty_of_utrecht.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0806/5187/files/worx_16_electric_chainsaw_wg303-1_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7129/1035/files/74505341125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8819/1394/files/63502653312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3359/3509/files/gazowidawitife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6634/files/78843896145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0676/6488/files/71192622212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2831/6313/files/eden_eternal_crafting_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/371117d3-4de9-4617-94d0-5f0cb01aced8/14631768526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ef42bc4-0721-4210-9033-bc4acbda280c/69763296012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27b5a829-681e-4e97-a478-6f4033d1c73c/76330570726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed3957d7-bde5-4007-864d-659c97c4f717/74542437270.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAC 4944 bytes
SHA-256: 123ed9fa26bbe1d2b44d8208a42df965f72f61675a19700d40edbeba6f5c05a4
font_01_sfnt_off00007ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE3 5268 bytes
SHA-256: 2efe11dd850ad54ffdbd82566ac10ae7b233f0676f7f3646da634535f7448d4d
font_02_sfnt_off00008ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE7 10368 bytes
SHA-256: fbfd44d3fcaf3ee9964af95b4d64c9e12eda8ffca59951af862b4fe9daeb5780

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