Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef65816fc7cdbda…

MALICIOUS

PDF

51.7 KB Created: 2020-08-19 06:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 469ec883f9fd55d146d40f11d1e39c19 SHA-1: 53ee4caf75d617634fcf1bb11ba4a8a9c857cccb SHA-256: aef65816fc7cdbdac22414647875e3ea92970e658fb863e62ff8b7206850ce61
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the identified redirector. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The file's purpose appears to be directing users to malicious sites through a chain of redirects.

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=ben+10+alien+swarm+nanomech+transformation
    • http://pawizeve.thesportdome.net/uploads/1/3/2/6/132681488/xazom.pdf
    • http://files.matchboxgreetings.com/uploads/1/3/1/4/131452878/miwiwerapomi.pdf
    • http://files.bluemeadowsfarm.org/uploads/1/3/1/0/131070246/labelizasu_zabunelo.pdf
    • http://files.renewableblooms.com/uploads/1/3/1/4/131453950/7522263.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/38369358339.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/fatugonilodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/63963393549.pdf
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/email_verifier_pro.pdf
    • https://cdn.shopify.com/s/files/1/0434/6091/9446/files/nuzaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/79149270180.pdf
    • https://cdn.shopify.com/s/files/1/0439/2986/2312/files/88659862276.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/wofamon.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/ansi_code_for_relay.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/20964418736.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/gexejuwojupedusipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/83295521300.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ef1.bin
6a491364a798e5fd3d9ef9e4ef9c112def4aa39148a4e3c94753e0857baf0af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 3576 bytes
font_01_sfnt_off00007bb9.bin
b55bd22fb04c2a664f2eb08240ce0412e2379491582743f3a8183bd44758323f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB9 5244 bytes
font_02_sfnt_off00008d6c.bin
055233298360618515dd119c65308bc18cca8e008c5d36b99c092ae8e7bdec54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6C 11260 bytes
font_03_sfnt_off0000b32c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB32C 4324 bytes

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