Malicious PDF — malware analysis report

Static analysis result for SHA-256 43bf62d512bb66ce…

MALICIOUS

PDF

46.8 KB Created: 2020-09-06 06:14:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c99b5ab40257de97ebf185087fa4c70 SHA-1: e0df9b497eece28c0c06c544a44ccbb89696a87e SHA-256: 43bf62d512bb66ceabcedb7e445508a3bbde6fe6dc9c4ee0eba05549c226bdf7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.club/wix?keyword=ngmodel+formcontrolname+angular+7
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/51107093679.pdf
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/jurassic_world_mod_apk_unlimited_eve.pdf
    • https://cdn.shopify.com/s/files/1/0440/7630/2486/files/dapapesamudijurokakovedu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/47408673650.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/tetukefok.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/68729222298.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6144/files/bleacher_report_apple_watch_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/54108232724.pdf
    • https://cdn.shopify.com/s/files/1/0435/0309/1876/files/rijekapasotekadesezeju.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/arsene_lupin_movie_2004.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_4f9adabf8c4c4ce3af6b6117fbb1a3e6.pdf
    • https://static.usrfiles.com/ugd/9e41f0_c61f3bf221034ca8a20f3a9819b0e4fb.pdf
    • https://static.usrfiles.com/ugd/ade4e6_f14b31a505664751af8ca293aafc61a2.pdf
    • https://static.usrfiles.com/ugd/4cf28d_9b91fb9f6b6f44cab1f1da1f8934aee4.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_off00007903.bin
186bf16d363fb2c00a506e5252282beb4b0e36f02fb40b43e5e380fc2a1a0b77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7903 5212 bytes
font_01_sfnt_off00008ab3.bin
6fc24be36343370db3ffa3dd2cc1ec8410b11fb7368d83eb0218867d1217df68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB3 10324 bytes

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