Malicious PDF — malware analysis report

Static analysis result for SHA-256 f228fc2d111ee8e6…

MALICIOUS

PDF

43.2 KB Created: 2020-08-10 19:31:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 305407041b180b5ca4dd1a37077cce69 SHA-1: 817a94e02a3334902d56baa681c9f5c366b86680 SHA-256: f228fc2d111ee8e6b2856e7ac60691e7781622fb808e14b4d1675c38792625aa
152 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, a common technique for SEO poisoning and redirecting users to malicious sites. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=automate+programmable+industriel+s7200+de+siemens+cours+pdf%2529', which is a known redirector. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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=automate+programmable+industriel+s7200+de+siemens+cours+pdf%2529
    • http://files.lovethecloset.com/uploads/1/3/1/4/131453598/17dc479511d.pdf
    • http://rezela.rivolirallies.com/uploads/1/3/0/8/130813528/03c21a573c.pdf
    • http://wedabo.cgband.net/uploads/1/3/1/4/131482995/damulekelawo-vapolofebiwonu-lobivilimofafov.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/87361214934.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7248/files/9587822883.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/paretajapamuvolux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/broadcast_media_history.pdf
    • https://cdn.shopify.com/s/files/1/0430/7432/2586/files/78364492525.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5303/files/pogojojatuwupowezusewofi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/python_test_if_file_exists.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/37839566794.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/datefelezuponusemarejulot.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_off00006a39.bin
1db548d16ee37254196c0b176e6b6c2aff99f368635b02d5fc4e2943cb86068e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 6032 bytes
font_01_sfnt_off00007eb2.bin
da99d208e51cba10cd4bdef1782884877e49d2c72a75ff37fbeddcf24a13c192
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB2 9624 bytes