Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d25f7fdb24fe299…

MALICIOUS

PDF

56.4 KB Created: 2020-08-25 00:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 652461a2d1f4f0f298f0070693a69039 SHA-1: 68150ff3dc416796b60acf7730f26977b20c2e5a SHA-256: 9d25f7fdb24fe299a5bd23111c94223d845a6c397c007e3fa12ed05a15343456
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=ap+ssc+marks+memo+duplicate'. This is further supported by the presence of a PDF link farm heuristic, indicating an attempt to distribute malicious content. The document body contains text related to 'Ap ssc marks memo duplicate' and a visual download button lure, suggesting a social engineering pretext to encourage clicks on the malicious link.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=ap+ssc+marks+memo+duplicate
    • http://files.wilfredofalcon.com/uploads/1/3/0/7/130776542/5384946.pdf
    • http://files.al-anon-ulster-sullivan-ny.org/uploads/1/3/0/8/130813111/xodezuwitorig_tuwowep_julivaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/48886572083.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/java_concepts_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/7093/8533/files/converting_measurements_worksheets_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0440/6204/8421/files/abolition_of_man.pdf
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/88377781326.pdf
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/dikaporepaviwipive.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/92126373167.pdf
    • https://cdn.shopify.com/s/files/1/0433/6916/9054/files/anchoring_script_for_farewell_party_in_college_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0447/1816/2074/files/barcelona_map_free.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_off00006977.bin
423c88c3a9d806806e88878ff6ca2aa4b728b8ab3aafe4b248a9a134ed653267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6977 5272 bytes
font_01_sfnt_off00007b3b.bin
abdb4882ebf8046738eb4b2086294ac8dafe64fef2102976b21adea8cddffaad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3B 24328 bytes
font_02_sfnt_off0000afdd.bin
707759bf79b025d22b1aa4c5511eea0335a11d4cb98f6b4d033feab65efa9609		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDD 10300 bytes

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