Malicious PDF — malware analysis report

Static analysis result for SHA-256 b057d2ba4aead904…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 15:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07598b417401d33abf42f336fe831747 SHA-1: dd8d76e6e2f722e1101729876174c3d422d1fff4 SHA-256: b057d2ba4aead904215674015d513d7b3a4057cdaaffefee702507b5cddcb904
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search engine results, with a primary malicious redirector URL. The document body, though heavily obfuscated, contains the malicious URL and references game hacking tools, suggesting a lure to entice users to click the malicious link. The ML classifier strongly supports the malicious verdict.

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=choices+you+play+hack+mod++apk
    • http://files.houstoncleaningsquad.com/uploads/1/3/0/7/130775679/wenazaj.pdf
    • http://files.artsoffmain.ca/uploads/1/3/1/4/131438439/ruvizoxazibopot-gepozawizeg.pdf
    • http://files.myceliumart.crikarsmarshall.com/uploads/1/3/1/3/131383826/jogur-gedob-panudapig.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/60957458242.pdf
    • https://cdn.shopify.com/s/files/1/0438/4810/6134/files/47505724397.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/6399128017.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/rugefos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/93805838213.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/jojugazumejizeponenekoxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4216/9244/files/10590837023.pdf
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/42967018907.pdf
    • https://cdn.shopify.com/s/files/1/0435/4175/8101/files/janapadalu_audio_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/segewajot.pdf
    • https://cdn.shopify.com/s/files/1/0433/6104/2591/files/32078318535.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/fivag.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_off000065fa.bin
657199f5dc3b09a6f8210d79a6e97bd70b1bb4c3782513a8a3dc8d533e756236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 5288 bytes
font_01_sfnt_off000077d7.bin
6e7953c9a3f46ef4adf05f5d0a4354e056fbaebee071be0fa34ab3b966de4f81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D7 10332 bytes

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