Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95cb65c8254e54a…

MALICIOUS

PDF

45.0 KB Created: 2020-08-13 00:25:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95a7367f9c884dcb590fd0c58c509094 SHA-1: 72fdfb3846c5d35633f62554e9bf02063a6812ba SHA-256: b95cb65c8254e54a14c0b5766a3e5890e9e7b3bc8f5a32caa714e4703e915ad2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as legitimate documents, but the primary link redirects to a malicious domain. The document body itself is heavily obfuscated but contains the malicious URL. This indicates a phishing or redirection attack aiming to lead the user to malicious content.

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=prentice+hall+biology+book+online+pdf
    • http://mutivav.bengonzalez.com/uploads/1/3/1/0/131070382/5261058.pdf
    • http://viwim.608art.com/uploads/1/3/1/1/131164250/gadilefoka_demapugu_semapuf.pdf
    • http://womagozen.getoutgetsouth.co.za/uploads/1/3/2/8/132816066/kigujixovaxela.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/38465113593.pdf
    • https://cdn.shopify.com/s/files/1/0433/2974/9145/files/skyrim_legendary_edition_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/gugofawigitowuwosipew.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/developmental_biology_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/46146627520.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/bpi_savings_account_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/41674730026.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/aha_low_cholesterol_diet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/36388368879.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/xusifuxamiveweboz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/rbse_class_11_biology_book_download.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_off000072a5.bin
99c8791f6f5a2c53409ed5e1496d7a69edbc7d62340fa55e7f5037e4dd04ed9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A5 5548 bytes
font_01_sfnt_off0000856f.bin
7b300db0f0e08495c5f8351d40ef6b80ab386ed4a2062327efa8c4e59d413ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 9792 bytes

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