Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7627ebe7813a324…

MALICIOUS

PDF

47.0 KB Created: 2020-09-06 03:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ad6e21ad3e0cd291ca7e3eb7f742c7 SHA-1: 71659f01c32cb1c1b2aba9b22349fd06f37231c3 SHA-256: a7627ebe7813a3247f193e409af0195b6782a83a4ae0e60a73b310d4c05acab5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link disguised as "Florida boaters education test answers". This link, however, redirects to a known malicious domain (ttraff.me), indicating a phishing or redirection attempt. The file also contains a large number of external PDF links, many hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be user redirection via the embedded link.

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.me/wix?keyword=florida+boaters+education+test+answers
    • https://static.usrfiles.com/ugd/c1615c_26e9b75f23bb43708ba96bb93b8dcb63.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_a4c98b8e68d94c5e83062a318a02c321.pdf
    • https://static.usrfiles.com/ugd/c722c2_598d451079d34fe09f046a4c0c896ace.pdf
    • https://static.usrfiles.com/ugd/a467d2_4c46d5d8485242799b55619fd2bcf55d.pdf
    • https://static.usrfiles.com/ugd/b7ab08_7f61107495a140a9abc704b08433d2be.pdf
    • https://cdn.shopify.com/s/files/1/0433/8905/9228/files/28529730252.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/radobalodirosibav.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/soft_skills_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/uc_browser_addons_apk.pdf
    • https://cdn.shopify.com/s/files/1/0461/7037/4296/files/wafikarobozejiwowut.pdf
    • https://cdn.shopify.com/s/files/1/0433/8276/7779/files/national_iodine_deficiency_disorders_control_programme.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/89645187882.pdf
    • https://static.usrfiles.com/ugd/ebbcbd_baeb32d4a4d64b498bd3a289104492f4.pdf
    • https://static.usrfiles.com/ugd/55cc32_b22b93067672490aa193d469b3d1f56d.pdf
    • https://static.usrfiles.com/ugd/b90ba1_ad3d0fcf730b419fa8bb5f98c65b98f1.pdf
    • https://static.usrfiles.com/ugd/3b7182_f7574711ccba40c98fa362987b12c75b.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_off000079b9.bin
c4e7c063fe926a41431ac777905cdac9e807d426140b4a84f9e003e4fa9a449a
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 5120 bytes
font_01_sfnt_off00008b3f.bin
b13f1c9da8825be45749ebd6a82a4a6b06e4229281574374b5bfab9ec324b6b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 10452 bytes