Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67df746a00dd46a…

MALICIOUS

PDF

43.8 KB Created: 2020-08-10 15:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce5d3229fc9a2834e1a0936e3bec9182 SHA-1: 944a731f5cf1a68360ef4f9e0de70fadc70449ed SHA-256: e67df746a00dd46a67ff741c483f32a1d99337d42c9a713b0cdae21ae65c9a46
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical redirector link to 'ttraff.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same malicious URL and numerous benign-looking Shopify URLs, likely to mask the malicious intent. The presence of urgency lures further supports a malicious intent to trick the user into clicking the malicious link.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=mbbs+physiology+book+pdf+download
    • http://files.gfwcncdistrictfour.org/uploads/1/3/2/8/132814166/c11ce90858c9.pdf
    • http://files.lulingicehousepottery.com/uploads/1/3/1/3/131382032/mamomabajebede_doketi_muzus.pdf
    • http://kujituwu.d12kiwanis.org/uploads/1/3/1/6/131637016/7318fbd3153b5.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/19789764129.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/8421711699.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7879/files/83484685745.pdf
    • https://cdn.shopify.com/s/files/1/0430/9978/3319/files/jozadezogubole.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/wisanuguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/gedifofazunasevanugudide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/fanetotefipigeviva.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/basic_concepts_of_economics_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/39857045248.pdf
    • https://cdn.shopify.com/s/files/1/0433/2191/7598/files/44100949280.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/xagirubiga.pdf
    • https://cdn.shopify.com/s/files/1/0432/3187/1139/files/28699406192.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_off0000630e.bin
1fb9b69b829c6a8ea2dd57234c536883cbe23cdcf584050c86d52d4f2543ab1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 5612 bytes
font_01_sfnt_off00007636.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x7636 1800 bytes
font_02_sfnt_off00007ec3.bin
cd80e4fe8898b6211bc73a58206a5d6e2826de2944eeeec43bce0ae3487f9515
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC3 10308 bytes