Malicious PDF — malware analysis report

Static analysis result for SHA-256 5880369ece6ff7e4…

MALICIOUS

PDF

43.8 KB Created: 2020-09-01 02:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332d270c2a80d7fa2d71b9293956e2f8 SHA-1: 87e48a101502c8dfc2d9641e4d968c7863083444 SHA-256: 5880369ece6ff7e4755e1aee79a154561a29200daa7065f0726448008aa160d3
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', which is flagged as a malicious redirector. The document body, though partially garbled, also contains this URL and the text 'Calling recording apps', suggesting a lure to a potentially malicious service. The presence of numerous other PDF links, many pointing to 'static.usrfiles.com', indicates a link farm strategy, likely for SEO poisoning or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=calling+recording+apps
    • https://static.usrfiles.com/ugd/735189_41538ed093d84945988661e2f739d20b.pdf
    • https://static.usrfiles.com/ugd/33ab24_d9620c78b70745f7ab9fdb5f142104ce.pdf
    • https://static.usrfiles.com/ugd/c7a620_e12029aa06c147be82b45823a5f86cd9.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/20620944967.pdf
    • https://static.usrfiles.com/ugd/93971e_e721bb45a3504192984d70ff2aecf656.pdf
    • https://static.usrfiles.com/ugd/de02f3_ec6485bad4af4bdf86e6eed2e0b96399.pdf
    • https://static.usrfiles.com/ugd/12f4eb_fd0b4586ed474ef9a76c9b1625458534.pdf
    • https://static.usrfiles.com/ugd/b7ed05_ceebc63c88444a1a8414485dce58f1f4.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/36848566132.pdf
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/76648667937.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/barron_s_gre_math_workbook_free_download.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_off00006dea.bin
ee0a18e31b10e75a1112344925db1b56695eaaee4535073f0016640616ea6af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEA 5144 bytes
font_01_sfnt_off00007f6f.bin
cdb9269ee87ccb0f61d4fa2f2d207d724436b61589a987d5c2fc8bcec8c90a9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6F 10444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.