Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47c7351f16f4af2…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 13:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2b5803e9940f2de401c75e714b3df95 SHA-1: 5d8da0b0fd1bb057f0225712c1dd5338ad36c4da SHA-256: e47c7351f16f4af25c34f3d0c21012e81322004d884eb5c0b6dae457c0079436
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO spam tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=anatomy+trains+2nd+edition+pdf'. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on various domains, reinforcing the malicious link objective.

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.com/pify?keyword=anatomy+trains+2nd+edition+pdf
    • http://files.horizonbrews.com/uploads/1/3/0/7/130775892/suminapu-subov-vugovebusasepew.pdf
    • http://files.stergiongroup.com/uploads/1/3/2/7/132740398/4599498.pdf
    • http://files.palliativecareforuganda.com/uploads/1/3/1/3/131384127/kipetipeme.pdf
    • http://poduloda.highclasswhoopass.com/uploads/1/3/0/7/130775320/692687.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/vegiromotiwatapakixigufek.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/85438629869.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2548/files/92845776240.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/46937930565.pdf
    • https://cdn.shopify.com/s/files/1/0444/4468/0359/files/machines_like_me_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/cheesman_canyon_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/44000626253.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/folenon.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/enchanting_leveling_guide_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/kotona.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/fexatalan.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/berserk_volume_2.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_off000065bc.bin
9745d15025c21f227fd5facd09c3618f85359cb5cf1f6396ca7bd7dffba4e8e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x65BC 5164 bytes
font_01_sfnt_off00007738.bin
b8fdd072ce3bbf0357fcf1f0464e0f9f5b87d21a85ab3a2ed7c014a54413c98d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7738 10540 bytes
font_02_sfnt_off00009b35.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B35 4324 bytes