Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34531ac248414d8…

MALICIOUS

PDF

42.9 KB Created: 2020-08-30 11:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b639ecca4ed8a40e74e8ee7ce8839737 SHA-1: 9a8bbc9f0c4aff82b5eb11191d739199305a85ef SHA-256: b34531ac248414d8cb7e4d30cbe14febff2e5152be6dc220a365b34d18fa2ae5
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is a known malicious domain. Additionally, it exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and references to other PDF files. This suggests a campaign to drive traffic to malicious sites, likely for phishing or malware delivery.

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.com/wix?keyword=99+construction+cost+osrs
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/baxojejawaxemiroxunavug.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/pazuximavupanerokevabuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/48513792234.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/midibizekal.pdf
    • https://cdn.shopify.com/s/files/1/0438/0409/8722/files/26621411340.pdf
    • https://static.usrfiles.com/ugd/a76634_8e47b4c38df14f09adac2acf1af6c845.pdf
    • https://static.usrfiles.com/ugd/10b11f_1c991ec092834a8d8984ed718c0ca473.pdf
    • https://static.usrfiles.com/ugd/253000_6aa0ca218d124edf85ed2dd21fee6632.pdf
    • https://static.usrfiles.com/ugd/e6092c_dd036818e619478eb1290b3959ad2077.pdf
    • https://static.usrfiles.com/ugd/16a96a_9ac26a7d621a4b29be58791c0bfce50c.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/bromelin_xarope_bula.pdf
    • https://cdn.shopify.com/s/files/1/0463/4551/9261/files/lenelinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/12230998250.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/dupasatokijasonozulite.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/bengali_karaoke_music_track_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5722/5638/files/tool_72826_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/xepikofovejukij.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_off00006c2f.bin
9f822baa11e4ba15b8f0a98a3897395f9c590d4dc70221d69d1348cbe93931bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2F 4612 bytes
font_01_sfnt_off00007be0.bin
dcc404e0a726a49beca3c68fd2346878152e6e5545d892c11a1d30424e2eddaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE0 10052 bytes