Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11b471994132c3f…

MALICIOUS

PDF

43.5 KB Created: 2020-07-30 02:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ece6f293e6551ae161ac7cdf0d0eac4 SHA-1: 3dbe75b0c68a972f6b659852e9b455587cc0537f SHA-256: e11b471994132c3f488827c15eb72694a2c29de86f412656c2a2afd4369850d5
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one hosted on 'cdn.shopify.com'. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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=jurnal+metabolisme+bilirubin+pdf
    • http://files.dermatagespa.com/uploads/1/3/1/4/131437005/ba6e860bf.pdf
    • http://files.candcstoneworks.com/uploads/1/3/1/8/131871729/wuwin.pdf
    • http://files.duransrxsquare.com/uploads/1/3/2/6/132695467/27603ad.pdf
    • http://files.ameliahamiltonfit.com/uploads/1/3/0/7/130775977/rineju.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/dosovujekokebuforilo.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/812087529.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/nigaboponagow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/vafizomejutugarevakaxun.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/kataden.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/lesozijerurezonopov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/xufodojiw.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/17204090480.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/jekeno.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/33101958031.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/peloxozur.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/
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/nig

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006409.bin
c9a2c3eb4957d8e3c1a47879df521dfecae570cd7525ec645768b4e8751dda2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6409 5200 bytes
font_01_sfnt_off00007585.bin
4bf11f4c6be75d81948f668266589190d37ddad2c534d5fe3da6d951fd618630
pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 2048 bytes
font_02_sfnt_off00007e66.bin
1697d868b6f43f1119db464236491a52cf9d9d53dcffdf64503486c1574e7819
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E66 9844 bytes