Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80a93baef6ffc93…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 08:38:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c4c037d8e9bce5bffd47adc20569634 SHA-1: 3e95c7b208fa275e06715a5f651244573b75ca51 SHA-256: f80a93baef6ffc93cf3b404d8c4a558af7951487507a3a7323651199bb882cc1
150 Risk Score

Malware Insights

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

The PDF document contains a clear lure related to 'Manitoba boating license answers' and embeds a link that redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the embedded URL. The ML classifier also strongly indicates maliciousness. The document's primary purpose appears to be directing users to a malicious site via a deceptive link.

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=manitoba+boating+license+answers
    • http://files.constructionandtreeservices.com/uploads/1/3/1/4/131453645/mifoz.pdf
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdf
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/34221600211.pdf
    • https://cdn.shopify.com/s/files/1/0431/6525/3789/files/random_nextint_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/nizazixasak.pdf
    • https://cdn.shopify.com/s/files/1/0437/3531/8689/files/rinelobexur.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/nigesaxepamotivigebimoruk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5077/9295/files/gakig.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/zetoru.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2984/files/9520488528.pdf
    • https://cdn.shopify.com/s/files/1/0430/8877/3269/files/amd_ryzen_5_3600_single_core_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/9644/8917/files/zareboliweveborifejapisu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6290/0374/files/botilafug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/troy_bilt_pressure_washer_3000_psi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/cake_live_chat_app.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_off00006aad.bin
9449aebe83d81d56ca0b2c3d99c8d94f541427ac73c091a1acd8c94c0ae27237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 5204 bytes
font_01_sfnt_off00007c7c.bin
bb99627d52927cbbcffd3297b50abdd5d25a97c5ed3394ab893b26f1e4f8877b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7C 10688 bytes

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