Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fe731836e08a4a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-21 00:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17590bd71d9477a0ecc2e8ca5610e664 SHA-1: 69f65374c102d17a3c651812cd4b33edee89532a SHA-256: b8fe731836e08a4a9188d769f1e33385b2ef1205bb8826f041f6c6b39c587b12
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also contains a PDF link farm heuristic, indicating a large number of external links, many of which are hosted on Shopify. The document body, though heavily corrupted, contains a URL that matches the redirector. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=binder+cover+templates+for+business
    • http://mojisiv.nataliemarie.org/uploads/1/3/1/4/131437502/kufixawaro_zopamisire.pdf
    • http://files.ileanaespejel.com/uploads/1/3/0/7/130739542/dibinab_bumuzajebipu_lazitesuzuse.pdf
    • http://kekow.alexbowlerevangelism.com/uploads/1/3/0/7/130739751/6019767.pdf
    • http://besozip.leeannewright.com/uploads/1/3/1/6/131606490/769410.pdf
    • http://easycoversandmore.com/topsproducts/easycovers
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/ferirap.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5554/files/sadurizegejezisesulanifij.pdf
    • https://cdn.shopify.com/s/files/1/0438/2274/3712/files/introduction_sample_for_internship_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0580/files/35798291931.pdf
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/temarabejarikabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/jipudebujamomom.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/75314681204.pdf
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/pojulojojadi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/berkshire_hathaway_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/83171973583.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_off000055ee.bin
9a7d143ee301c246b7d23b5ae75018c73c5aaed8688ed6198dcbbd34b6cab824
pdf-font-stream PDF embedded font (sfnt) at offset 0x55EE 5548 bytes
font_01_sfnt_off000068ab.bin
644a729a5cc0fbc0ad949b2d34e1d1849e961f34d89be0ec23cf45a01943e515
pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 13560 bytes