Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff9905d0af9cb4d…

MALICIOUS

PDF

50.7 KB Created: 2020-08-12 09:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dd110e6f991b896a6f14a98baff6056 SHA-1: 039e6c583c775cdec659931182622039cd73573d SHA-256: 3ff9905d0af9cb4d3720468b58c318739ff8bf9337c51027526d8db3fcb87e5a
140 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to seemingly benign Shopify domains, but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'accounting principles 11th edition solutions pdf' and the malicious redirector URL, suggesting a lure to a phishing or malware distribution site. The presence of a callback phishing lure heuristic further supports the social engineering aspect of this document.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=accounting+principles+11th+edition+solutions+pdf
    • http://files.congrevelab.org/uploads/1/3/0/7/130739835/1534088.pdf
    • http://files.permanentmakeupsociety.com/uploads/1/3/2/8/132814791/zilojid.pdf
    • http://fovup.winchesterdisciples.org/uploads/1/3/0/9/130969060/mozowanap.pdf
    • http://files.moirajo.com/uploads/1/3/2/7/132710655/6052939.pdf
    • https://cdn.shopify.com/s/files/1/0431/0938/4343/files/55777910214.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1357/files/1467405311.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/cambridge_global_english_starters.pdf
    • https://cdn.shopify.com/s/files/1/0435/9910/2115/files/89697954685.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2093/files/74394481555.pdf
    • https://cdn.shopify.com/s/files/1/0451/3647/8361/files/class_11_ncert_biology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/90998936598.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/bagivadujofej.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/gubuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/mufutexovetabisepus.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_off000085ee.bin
f32453cc287521ab9f3fbf3581991d0acdc956e160f8719568839c3705652b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EE 5248 bytes
font_01_sfnt_off000097ca.bin
a1989626c758301cc39dc8ec1dfbc16491407dc0a86b702e60ccc9083ab74f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97CA 11464 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.