Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceadc02acebb59ac…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 21:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d6edaa212866af004516aa4b044e7a3 SHA-1: 13604674890e7555b0d78b1700607be515af97fd SHA-256: ceadc02acebb59acb8ca25a62218a37a4e4afca07222b29a5c640146a1d6ba86
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for further exploitation or phishing. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination.

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/wix?keyword=how+long+can+a+11+week+puppy+hold+it
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/memigivasikibuguge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/zerewu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/zalovosurawexinugezanir.pdf
    • https://static.usrfiles.com/ugd/b8c837_66acace23f7948cab8c857045f26fa7b.pdf
    • https://static.usrfiles.com/ugd/2e16aa_8302de295a294e06a951085467666e76.pdf
    • https://static.usrfiles.com/ugd/15d534_09b3ea34529f47069044297d671d287f.pdf
    • https://cdn.shopify.com/s/files/1/0437/2421/0326/files/best_building_construction_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/0541/9418/files/my_favourite_things_violin_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/zukukosekov.pdf
    • https://cdn.shopify.com/s/files/1/0456/8357/2895/files/voltage_transformer_used_in_substation.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/tupirekobom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/lady_boss_naa_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/flujo_de_energia_cadenas_troficas.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_off000066b7.bin
f38e688abcf9f31a3e7ef43948ade0a0ae00e49f9c11284378a39acc39914a7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B7 5332 bytes
font_01_sfnt_off000078f0.bin
b716777b9b0065afe647bc205502f44218390df575b10656fb7b997a39720cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F0 10268 bytes

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