Malicious PDF — malware analysis report

Static analysis result for SHA-256 30495e751e8d4466…

MALICIOUS

PDF

46.3 KB Created: 2020-08-04 06:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05146113caf4d6b0cdac8d451cf13bc1 SHA-1: cb938cb6f61599a1f85ace2b5733013e0bd58a4a SHA-256: 30495e751e8d4466ecd49281514ca9a9b6e687f810d10d4ef40b7f2cf56592b9
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating the primary intent is to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=aboriginal+and+torres+strait+islander+social+and+emotional+wellbeing+pdf
    • http://files.ljlawoffices.com/uploads/1/3/2/8/132815123/foposigej-lajopebajinino-salakagadi.pdf
    • http://files.abideministryofarlington.org/uploads/1/3/2/6/132695575/2022476.pdf
    • http://files.mobile-autoelectrical.com/uploads/1/3/0/8/130874457/zomimajolefedufinoxi.pdf
    • http://files.signalmountaintravel.com/uploads/1/3/1/3/131382032/vonerijawi_mefaf.pdf
    • http://files.tricoabstract.com/uploads/1/3/2/7/132740463/kejodiredepujasiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0216/6428/files/ielts_cambridge_9.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/84124414430.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/wuruz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5222/files/50815213549.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4307/files/difference_between_revenue_expenditure_and_capital_expenditure.pdf
    • https://cdn.shopify.com/s/files/1/0438/3073/9106/files/82982889056.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/gusewedin.pdf
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/bavawupanobajebirurug.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/problems_on_time_value_of_money.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/35225433981.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99203043279.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_off000074ee.bin
0c349d1fc1e41c375e5d7a57f98d52b17075d44a896d5b3dc6b051ccf5e957f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x74EE 5696 bytes
font_01_sfnt_off00008844.bin
63677c47a673cf720f6aae2fbcb5a6b5f2dce8a06497e3efefe66de6583df575
pdf-font-stream PDF embedded font (sfnt) at offset 0x8844 10244 bytes