Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a2d9e7c95fdd2c…

MALICIOUS

PDF

41.7 KB Created: 2020-09-01 02:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85fa91967d40792965c1931106fa0686 SHA-1: 01f96933b2732dc6d8e21c03a88857a9b93896ad SHA-256: a1a2d9e7c95fdd2c63903a7c2de240247c6a6672df4810bf1de3cee5c350f16a
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'secure online payment platforms' and the malicious redirector URL. This suggests a phishing attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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.link/wix?keyword=secure+online+payment+platforms
    • https://cdn.shopify.com/s/files/1/0440/0830/8886/files/64421518724.pdf
    • https://cdn.shopify.com/s/files/1/0435/4048/0155/files/mas_alla_del_sol_acordes_d.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/step_2_ck.pdf
    • https://cdn.shopify.com/s/files/1/0447/2560/0410/files/singular_and_plural_nouns_worksheets_for_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/37796672154.pdf
    • https://cdn.shopify.com/s/files/1/0435/4952/4127/files/best_japanese_learning_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/pimakuwanezepapasegaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/8625/6030/files/zegax.pdf
    • https://cdn.shopify.com/s/files/1/0431/5047/5413/files/adenosina_farmacocinetica_y_farmacodinamia.pdf
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/centos_build_essential.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/sariwedewutokow.pdf
    • https://static.usrfiles.com/ugd/b8c837_1649157441a143e9b41e4bcc65abc0a2.pdf
    • https://static.usrfiles.com/ugd/d1d005_85d0e97770e045779441d7100fec8b30.pdf
    • https://static.usrfiles.com/ugd/7198c1_f3002b1d00ef40489fe3ee68b2235cd2.pdf
    • https://static.usrfiles.com/ugd/72b0e7_8da534243f9a4170931a17a4bc2d3718.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_off000061ed.bin
6175a0640b1b61c2a8381cc1dfa34c74b44e8b923b7ce9fc8ce41f0fd3faf537		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 5364 bytes
font_01_sfnt_off00007425.bin
fd2614d8ec49c7daa26c1c8668b4ea920ed50827b12b42e95fea2350d11640c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7425 11156 bytes

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