Malicious PDF — malware analysis report

Static analysis result for SHA-256 f110c9c2dcaf9a4c…

MALICIOUS

PDF

48.8 KB Created: 2020-08-04 20:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdc2c3d42abc9fe479dd454eca9ccb73 SHA-1: 9fafe99fd768f76a849de931dcd1894b068b791f SHA-256: f110c9c2dcaf9a4c187f09537db5da93268ee2c37312205fd86a22a141c9ac31
152 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.ru/pify?keyword=color+by+number+worksheets+pdf, is identified as a known malicious redirector. The document's content and structure suggest a phishing or redirection attempt, likely to deliver a secondary payload or lead the user to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=color+by+number+worksheets+pdf
    • http://files.ragsboutique.org/uploads/1/3/1/4/131437308/jeten_jofedavajo_foxipal_gepaxonubesis.pdf
    • http://files.bodybarn.net/uploads/1/3/1/4/131437117/978bcacc69ff00.pdf
    • http://files.brickwallcoach.com/uploads/1/3/1/4/131437513/ritona-lutiga-joxozajaguro-fizumew.pdf
    • http://files.alanbirtwistle.com/uploads/1/3/1/3/131383664/werox_xapedewero_bemidituziv_zurer.pdf
    • http://files.leeluummakeupartistry.com/uploads/1/3/0/9/130969576/c90fcc9a89c4.pdf
    • https://cdn.shopify.com/s/files/1/0436/3082/1529/files/86829800829.pdf
    • https://cdn.shopify.com/s/files/1/0433/8132/5978/files/romebekukef.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/dekoguresebovavenozet.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/burrito_boyz_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/novunapuravil.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/nasurefunojuvugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/87107364377.pdf
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/fisalubunodo.pdf
    • https://cdn.shopify.com/s/files/1/0440/7348/4438/files/46678931424.pdf
    • https://cdn.shopify.com/s/files/1/0431/7478/9281/files/99384550055.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/zajiko.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/67931397155.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fe5.bin
35ec0e99ae3b9ae4fd6e9146e2cf5a587f8d5c7204c70e5e613c55ede36e029f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE5 5372 bytes
font_01_sfnt_off0000920c.bin
0378880c401cf274d8ce809bc34b5529423d7134259cac270b48a1e0e6ce23fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920C 10472 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.