Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ddc46eb68728b0…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 12:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9816d050104729750417c12d6a700927 SHA-1: d2b9e6ed515b8c9a534d0acfaf0bc1e4208ee415 SHA-256: c7ddc46eb68728b0adb20c2348de533050bca0a57b9d626a56faa204fa36b1bd
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF contains a mass external link farm, with a primary malicious redirector link. The document body text is obfuscated but contains keywords related to a PDF download, and the embedded URLs suggest a phishing or SEO poisoning attack. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=alice+munro+dear+life+pdf+download
    • http://files.ambatilab.com/uploads/1/3/0/8/130874039/d6f728faf.pdf
    • http://files.tlcraingardens.org/uploads/1/3/1/0/131070993/4403743.pdf
    • http://bebopezug.fidelcantephotography.com/uploads/1/3/0/8/130813612/2115176.pdf
    • http://files.wilsonceramicknives.com/uploads/1/3/1/8/131856919/fc3882c.pdf
    • https://cdn.shopify.com/s/files/1/0428/8879/0179/files/9158409512.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0327/files/ages_and_stages_9_month_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/86254512878.pdf
    • https://cdn.shopify.com/s/files/1/0435/4637/8404/files/40866736556.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/avalon_hill_civilization_rules.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2753/files/wilola.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/gyrochronatom_wow_classic.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/basic_spanish_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3690/files/56035605776.pdf
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/gamma_ray_gungeon.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/jesaxefujuroximuwexug.pdf
    • https://cdn.shopify.com/s/files/1/0435/9317/1103/files/pijak.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/prodigy_hack_github.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006db4.bin
9c9caf1b02ec4b3fc1af06464c8c96d1a4d5397de2b163068056a7126fa7e8fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 5204 bytes
font_01_sfnt_off00007f65.bin
fd60de46738f241a8a2aa616564c25b9814fe346af4980ef726ffad783ac1622
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F65 10564 bytes