Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d3632aae2dd1343…

MALICIOUS

PDF

51.0 KB Created: 2020-08-14 22:57:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3dfd7277aa18be1102ac66c7dc2fb8b SHA-1: 987f1ae2df4f3adbb05040d69f5dc0da01ff2bf9 SHA-256: 1d3632aae2dd13432f5cfd818dde61b73ce1d929cfd74f860927111563f1e66d
150 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at `ttraff.com`. The document body, though obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=hatsukoi+1%252F+1+route+guide
    • http://files.mindfulsoulcenter.com/uploads/1/3/1/8/131871627/jokupizisaduzawikule.pdf
    • http://files.mindfulwellness.us/uploads/1/3/1/4/131453124/susaporuxux-karivumupujore-ramamaxef-vakesepupova.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/9258415175.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/16242611825.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/48152052392.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/19411746208.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3437/files/opg_deputyship_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/kumedixamefowesazuzitam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/caterpillar_c15_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/mubijapaxizowaxuderuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0794/files/zakiwazesozetovununoduwu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/meden.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/vebolakaliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/makalah_bendungan_asi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007941.bin
0fbbe789a2da7ea88753ade1c6d4064c2e63708526e555d2028da8ddfe41f9c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7941 4612 bytes
font_01_sfnt_off0000896b.bin
d2989d79db2b12b79e076d8ca378a16c8c57b0bf8776f1638915135981517e36
pdf-font-stream PDF embedded font (sfnt) at offset 0x896B 5076 bytes
font_02_sfnt_off00009ac4.bin
f474c80caf832afe58fc10fa9fb5dfb68958864b60c3295d8b1b51a40a338a07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC4 10416 bytes