Malicious PDF — malware analysis report

Static analysis result for SHA-256 241ee38de6ce97d1…

MALICIOUS

PDF

46.9 KB Created: 2020-08-04 04:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a840243744030a1450f340dcea2a660c SHA-1: e8302278f5ec83cfdc93a5166f6d8f66536e252b SHA-256: 241ee38de6ce97d1fedcf54660b52f15982a5fe689480c6bba772e2eb64b60a5
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=hourly+weekly+schedule+pdf'. Additionally, it exhibits a PDF link farm pattern, with numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to schedules and URLs, reinforcing the lure. The primary intent appears to be redirecting users to malicious infrastructure.

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.cc/pify?keyword=hourly+weekly+schedule+pdf
    • http://files.johnsclassiclures.com/uploads/1/3/2/7/132712323/893646.pdf
    • http://files.coolbyfans.net/uploads/1/3/1/4/131406060/sofewadexo_bopib_podetuwejeg.pdf
    • http://files.kvwilsonauthor.ca/uploads/1/3/2/7/132710795/5919531.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/jeramare.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/zifododadunu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/93000810182.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/ropemawasagebuwiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/99696036422.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/bavuxoditiwupofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/lebaxefip.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8772/files/22533258293.pdf
    • https://cdn.shopify.com/s/files/1/0431/7357/6865/files/9547704052.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/15661888562.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/nojawuvesepifafekomomod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/71315394876.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_off00006d59.bin
ed760f8cc723cb246b3367a65f418f1d0f27e72c4fe717d68a2b77919117b2c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D59 4900 bytes
font_01_sfnt_off00007e32.bin
764c95446f57fc448218fcc7cc5927e96f01201266727b32a919d473d54d4c5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E32 10048 bytes
font_02_sfnt_off0000a040.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA040 4324 bytes