Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fa53f54366c520…

MALICIOUS

PDF

52.1 KB Created: 2020-08-02 04:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5503b5c29d14713975d732436b6ecaf SHA-1: 6917853bc6609090f252ce7a43b783cc4b92f39c SHA-256: 46fa53f54366c5200440e8406b36ee0c2d591c340db633823f6249326d124b27
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=goldmine+record+album+price+guide', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify URLs, many of which are confirmed benign, may be an attempt to blend in with legitimate traffic or to host decoy content. No scripts were extracted from this sample.

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://ttraff.cc/pify?keyword=goldmine+record+album+price+guide
    • http://files.david-jennings.net/uploads/1/3/1/4/131453902/2983058.pdf
    • http://files.fiddleheadfoods.com/uploads/1/3/1/4/131453268/jomapaguzo.pdf
    • http://files.faroutfirstaid.com/uploads/1/3/1/8/131856173/2af16.pdf
    • http://files.nourishandthriveforlife.com/uploads/1/3/0/7/130739779/6131783.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/24947754518.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/90479117763.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/66890871067.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/49314467008.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/25375731731.pdf
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/nenovuduzixizifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/panefade.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3315/files/fovidisusogejawegevi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/93425666492.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/24218417351.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/26020003482.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/tabapatives.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/limarigunefudixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/jufojow.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000750d.bin
39b9814d13961a1313e91ddd883a3e1559290fe3a683b352860c3e9de65d4e61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x750D 5384 bytes
font_01_sfnt_off00008742.bin
c48a56592196ba8fc814638ebe656b5d3c359667024f818935262faa264c1a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8742 10628 bytes
font_02_sfnt_off0000abd7.bin
3f6975867cb3a1c6b5b351f275f00a967b82afee56b2a2af9c58c7e25375226b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD7 16760 bytes

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