Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa26b923f7443647…

MALICIOUS

PDF

49.5 KB Created: 2020-08-22 08:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e899eb75fb07b5526345f8096a6a2da SHA-1: 94b3d7a45c886e0fcb5b3baebe7ed001860f8520 SHA-256: aa26b923f74436472a08ec2b17c855b3242eb44ac8b99303755d33afc094260b
120 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector service, which in turn leads to a malicious URL. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL itself. This suggests a phishing or scam attempt where the user is tricked into visiting a compromised site by clicking on what appears to be a legitimate link.

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.com/pify?keyword=erik+satie+gymnopedie+1+sheet+music+free
    • http://files.111sage.com/uploads/1/3/1/4/131438058/zofinefadurimux.pdf
    • http://files.drobscience.com/uploads/1/3/1/6/131636941/velewiwaxanovez_mulodivemi_vajadorulusu.pdf
    • http://figat.amishfictionbooks.com/uploads/1/3/0/7/130776031/9621684.pdf
    • http://files.pascalletourneau.com/uploads/1/3/1/4/131406036/dc2cffa7.pdf
    • https://cdn.shopify.com/s/files/1/0432/1463/5165/files/19547829850.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/zarutalujilowu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/encyclopedic_dictionary_of_applied_geophysics_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/polycab_lt_cable_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/2801/2456/files/epidemiologia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/invalid_request_authentication_expired.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/irrigation_engineering_books.pdf
    • https://cdn.shopify.com/s/files/1/0453/5540/1371/files/faringitis_herpetica.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/lujepiguruvalojedunoketaz.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_off000071f8.bin
236f6d880b77180d11ff2e1e6976a1b9b5afbbac5868760314e9a278958d3146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F8 5712 bytes
font_01_sfnt_off0000854e.bin
955537d042a0eb8a2d24ca0d5974dd0fe6fc5e21df163c153f9ecbcb4d89afa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854E 15572 bytes

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