Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c713f0398aab130…

MALICIOUS

PDF

50.0 KB Created: 2020-08-23 06:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7610627b47d6de29039cc24bb2c8994e SHA-1: a49af3fe1012c8e32d9c8a6a6ac0ce5dd4a27fbb SHA-256: 3c713f0398aab13004c7baaa9cdc7690187626af5949d2792cc4f1c4f3e6c4be
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is characteristic of a link farm designed for SEO manipulation. One of these links, 'https://ttraff.com/pify?keyword=awesome+mixtape+vol+2', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=awesome+mixtape+vol+2
    • http://files.skmusicboosters.org/uploads/1/3/1/8/131871625/8805677.pdf
    • http://walid.simheart.com/uploads/1/3/2/3/132302921/8d1417e6.pdf
    • http://files.pptf.ca/uploads/1/3/0/9/130969440/8132619.pdf
    • http://jewoze.oddballcraftscreations.com/uploads/1/3/2/7/132740405/wewinirunasamiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/al_mulk_terjemahan.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/xovegifibuwajimiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/salurarozudatapomevotut.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/38215565410.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3283/files/36889270533.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/all_of_me_jazz_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0440/8049/6792/files/34696747790.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/xuvabig.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/62965648061.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_off00008514.bin
5546e82986dee2c5f5b87a40b2f3f4d9aa36a7279b5ade9a1a2cd1185adb50a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8514 5208 bytes
font_01_sfnt_off000096d7.bin
500c42433cf00f5376de35bdd6ee32b53657ec8ed2eb06329c9f4b0d8c4be8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96D7 10668 bytes

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