Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b47c56aa7c95bc…

MALICIOUS

PDF

43.7 KB Created: 2020-08-28 03:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0dd34e15244ccfc5a26c79f45381130 SHA-1: 7f8b1712275132c5c6f84b25a362448b283990bd SHA-256: b2b47c56aa7c95bc7dde6d60eed681a3127f8296faff27fbdb911328c109619c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of embedded links, characteristic of a link farm. The primary malicious URL, 'https://ttraff.me/pify?keyword=edjing+5+pro+apk+full+unlocked', suggests a lure for software downloads, potentially leading to malware. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • 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.
  • 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.me/pify?keyword=edjing+5+pro+apk+full+unlocked
    • http://files.harrytadd.co.uk/uploads/1/3/1/3/131398195/mepodofezalad.pdf
    • http://timab.marinashay.com/uploads/1/3/0/8/130874519/3105130.pdf
    • http://files.noahsager.net/uploads/1/3/1/4/131406390/3bc02758b5f.pdf
    • http://files.rockasmock.com/uploads/1/3/2/3/132303170/8903934.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/starwood_brand_standards.pdf
    • https://cdn.shopify.com/s/files/1/0463/0321/5773/files/12097014922.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4050/files/bridal_chorus_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/31282505433.pdf
    • https://cdn.shopify.com/s/files/1/0437/1084/1000/files/google_sheets_how_to_freeze_multiple_rows.pdf
    • https://cdn.shopify.com/s/files/1/0429/5055/7855/files/86321148949.pdf
    • https://cdn.shopify.com/s/files/1/0448/2056/2077/files/spelling_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/64886520688.pdf
    • https://cdn.shopify.com/s/files/1/0429/3859/7539/files/fuxupaxemeluzogibog.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/jopofefeduvanem.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/72419709898.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_off00006c6f.bin
c3497ac90feec5f6c13290b1e98649b7c498b50405e7873d76a578be110b930b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6F 5364 bytes
font_01_sfnt_off00007ec8.bin
c185fe64fedeabd6890cea44295b5bf6bf65eb08a007f6a4680758c6df167793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC8 10128 bytes

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