Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d475205a7d0eca…

MALICIOUS

PDF

48.1 KB Created: 2020-09-05 21:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 374cd655b9bda506649e2200770faa0c SHA-1: 326097d98f2c3b82de0810cffece388a652a5e20 SHA-256: 21d475205a7d0eca7b134d24366c3e0108cf58a1891da15c5f108b3745323c2c
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as information about a mobile device. It also features a large number of external links, many pointing to benign PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The presence of a callback lure further indicates a phishing or scam attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.me/wix?keyword=asus+zenfone+4+android+9.+0
    • https://static.usrfiles.com/ugd/e2b09b_e3489dbd95f743c7bd1ab27edefac443.pdf
    • https://static.usrfiles.com/ugd/d216cb_dd8763420b9a4c7183c8a95f8ccf5ce2.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_918ad970ee1e45b892225ea443faa71d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9986/5756/files/mitavofisewewigiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/sowikogove.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/free_of_telegram_x_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0435/1488/8360/files/xizuzinifazezub.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/fudejemebaroz.pdf
    • https://cdn.shopify.com/s/files/1/0454/7146/5630/files/dagobakobojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/ragijipulute.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/45036411054.pdf
    • https://static.usrfiles.com/ugd/3e87bf_4e6cea4327e94187bbabc755378bfab3.pdf
    • https://static.usrfiles.com/ugd/38eac1_d337997eb8664754a1d3a95238801c2c.pdf
    • https://static.usrfiles.com/ugd/4c3ae3_79d2a18d3cda43f3b877f63d03def7ac.pdf
    • https://static.usrfiles.com/ugd/fb41f9_81fd33a789ff4e5a8cfa2ec227a4ed95.pdf
    • https://static.usrfiles.com/ugd/5438e3_e9bc414429514adaa5536411fa955ef5.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_off00007351.bin
ad50f618ea89506ee74d31616e46f6542edd037cef9214911da79b24c49c75bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7351 5328 bytes
font_01_sfnt_off0000858f.bin
0ec4f834cb6cce32324633a8ec2847ccdb053f626c2d36043b14ca2e0f6e31fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x858F 14836 bytes

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