Malicious PDF — malware analysis report

Static analysis result for SHA-256 a038df460b80914f…

MALICIOUS

PDF

42.4 KB Created: 2020-08-04 08:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06d194df99efec9e8b96b1284acbb921 SHA-1: d8dd40a81b62b181a0859cdf3ad1beda33cfd58d SHA-256: a038df460b80914f40da51a9d1be87b82231e81f6db49d8b37b6ead0d79afa59
150 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 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'cash flow statement problems and solutions' and includes the same malicious URL. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. This suggests a phishing or scam attempt using a seemingly legitimate document to trick users into visiting a malicious site.

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=cash+flow+statement+problems+and+solutions+direct+method+pdf
    • http://files.magiqatlas.com/uploads/1/3/0/7/130739265/zowadure_dimireno.pdf
    • http://files.floralnotesbyd.com/uploads/1/3/1/8/131856995/mulatakanu.pdf
    • http://files.premieractprep.com/uploads/1/3/0/7/130776368/nonunipavapaxuvigi.pdf
    • http://files.quantumology.org/uploads/1/3/1/0/131071256/9d5e08a2a.pdf
    • http://files.dashapparel.co.uk/uploads/1/3/0/9/130969452/299880.pdf
    • https://cdn.shopify.com/s/files/1/0428/6581/9814/files/buwuso.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7847/files/migozilanunogiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/metozewukitotodoloduviki.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/kitixexokapabijaresogol.pdf
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/luxid.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8545/files/xitozipusanenizaferotiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/sixth_sense_technology_seminar_report_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0444/4022/3911/files/multiplying_integers_worksheet_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/7848753887.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/30239511206.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nujogopuju.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_off000059a9.bin
1a70642f237d0f309294d9f6e89d512a2e8e9d036b505ec7ccea0dd8aebf5806
pdf-font-stream PDF embedded font (sfnt) at offset 0x59A9 5532 bytes
font_01_sfnt_off00006c5c.bin
f4de5973897093ca0aaa97524f06c256b9206d739898dfbcd682a25ba2874d90
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 9992 bytes
font_02_sfnt_off00008e3b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3B 4324 bytes