Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4b1ec6c4c54d1f…

MALICIOUS

PDF

51.7 KB Created: 2020-09-10 01:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd475ceee29a14b19a518e6901a88079 SHA-1: 6c2b3f78c341d32271dc5b8bfa5eae2c6702c6aa SHA-256: ee4b1ec6c4c54d1fab6a6d174a4e0b7c1433935e53e94f055dee03fa81c8183b
168 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Pearson financial accounting answers', combined with a 'download' call-to-action. This points towards an advance-fee scam or phishing attempt, where the user is tricked into clicking a malicious link under the guise of accessing educational material.

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.me/pify?keyword=pearson+financial+accounting+11th+edition+answers
    • https://static.usrfiles.com/ugd/11276f_a3991a5a00bf45b8a0030567c7079397.pdf
    • https://static.usrfiles.com/ugd/17ce20_b8a66ab5a36941a0bcc7929bd3162bd8.pdf
    • https://static.usrfiles.com/ugd/ddb60a_71f5315819ce422eb26080c39321b4ed.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1413/files/rumpelstiltskin_brothers_grimm.pdf
    • https://cdn.shopify.com/s/files/1/0434/3745/7575/files/alimentacion_parenteral_en_neonatos.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/nosuserumoximezudisesaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/51042925695.pdf
    • https://cdn.shopify.com/s/files/1/0436/8062/8889/files/netflix_movies_macbook_pro.pdf
    • https://static.usrfiles.com/ugd/9219f8_60c43d98a06141688d9328f326e0ad6f.pdf
    • https://static.usrfiles.com/ugd/e02969_be8aac614b264e88b086354670c04c41.pdf
    • https://static.usrfiles.com/ugd/58a813_0e49e91c1c5340fab8f0a44601718de5.pdf
    • https://static.usrfiles.com/ugd/6f58fb_c6cb900ce59d4201b9aadf69f684c651.pdf
    • https://cdn.shopify.com/s/files/1/0433/7798/3651/files/5765119553.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/358508381.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/coordinate_geometry_circle_formulas.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_off00007fe8.bin
4c481107076b5ddb3ee7b7b0dfa7d291c1db57ac6ee989e58c27d3f95cc7ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE8 5428 bytes
font_01_sfnt_off0000926a.bin
c543d24ab40b6f59d0d0d2dfb3c1dc44a958944e44456b0931ba43b7b6cfc9e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x926A 15372 bytes