Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6da30b2a9c4dd8…

MALICIOUS

PDF

39.6 KB Created: 2020-08-25 04:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6efe56352687436b660ccf317f11987d SHA-1: aa3f6fb0e95df0e84b06065ceedef7bdef6b0e24 SHA-256: 4a6da30b2a9c4dd82aea2a235ee65530e54556a152eae6accaf8e4b29022ee35
120 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=acer+aspire+5532+manual'. This indicates the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution. The presence of a PDF link farm further supports the malicious intent by attempting to generate traffic or SEO manipulation. No scripts were extracted from this sample.

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=acer+aspire+5532+manual
    • http://files.writing4content.com/uploads/1/3/0/7/130776433/zogageluvofolebot.pdf
    • http://jebedebov.madeleinedarcy.com/uploads/1/3/1/0/131070571/03e1264c0e1e9.pdf
    • http://files.kindactswarmhearts.com/uploads/1/3/0/7/130775997/4774485.pdf
    • https://cdn.shopify.com/s/files/1/0465/3026/5238/files/instruction_of_amenemope.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/86042659215.pdf
    • https://cdn.shopify.com/s/files/1/0437/2027/8171/files/87855927532.pdf
    • https://cdn.shopify.com/s/files/1/0432/9560/4891/files/suxurilavugetujije.pdf
    • https://cdn.shopify.com/s/files/1/0450/3168/6294/files/adding_watermark_to_foxit.pdf
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/diccionario_armando_hoyos.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/biology_11_textbook_miller_levine.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7903/files/97747120772.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/bojeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/lexixukurabuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/paxufojojamemumo.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_off0000518f.bin
603e69a115f2102eae8eb5794328b48a210bf3ee877f1c6324c748797e33c255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x518F 5488 bytes
font_01_sfnt_off0000641c.bin
33bee3f02f3234f5e2ecf3dc29c212507e95c84cd67e8217942bdb9a51a7dfd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 14884 bytes

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