Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a1f8d765605358…

MALICIOUS

PDF

34.7 KB Created: 2020-10-29 16:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5c7be3614b681dd7f3f225fdc09ab23 SHA-1: a1af0bce350236f56325f5216251169509ef7ca3 SHA-256: 14a1f8d76560535867966a425f721020b56ac802cfaf9f8b6d6408a9491a01e6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, also contains the malicious URL and other benign-looking PDF links, suggesting an attempt to manipulate search engine results or lure users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gettraff.ru/aws?keyword=polly+pockets+race+track
    • https://cdn-cms.f-static.net/uploads/4392453/normal_5f908ca9d8fad.pdf
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/f614cb46767a558.pdf
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/994ea3a111c44.pdf
    • https://cdn-cms.f-static.net/uploads/4380214/normal_5f98d3818a1a5.pdf
    • https://jenejipita.weebly.com/uploads/1/3/4/4/134473981/6859760.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/seduxuwujukidalex.pdf
    • https://cdn.shopify.com/s/files/1/0497/2897/9096/files/game_mobile_lu_vit_ha_android.pdf
    • https://cdn.shopify.com/s/files/1/0502/2662/6719/files/24464782139.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1153/files/16322492155.pdf
    • https://cdn.shopify.com/s/files/1/0429/2578/5255/files/gluten_free_girl_everyday.pdf
    • https://cdn.shopify.com/s/files/1/0437/9446/4929/files/xirokebakexe.pdf
    • https://cdn.shopify.com/s/files/1/0498/7250/2942/files/35855276169.pdf
    • https://uploads.strikinglycdn.com/files/3e38f4eb-6d0a-488d-858b-637a3f8ba715/rifitalajalex.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006315.bin
20cd9c9ddcaae68803d427cac234e627c22c1e6a628dfa038cba581fa5df1a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 5096 bytes

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