Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30d67a8c0cc52a3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-21 16:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80cc4bd3aab49a63a4ab5141d92b9ac9 SHA-1: 7991892426b4fcee09d20a2bcf85fa6d42e56717 SHA-256: b30d67a8c0cc52a38f8b523cea80ba17ebf7fe120b7dce20e3fa52aa2f66b690
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary malicious link redirecting to a known malicious infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malware. The presence of these links and the malicious redirector strongly suggests an attempt to lure users to harmful 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.cc/pify?keyword=sample+blog+post+template
    • http://files.globalpurposegroup.net/uploads/1/3/1/3/131380305/4573184.pdf
    • http://zedunidak.erspamermusic.com/uploads/1/3/2/7/132741073/03339da.pdf
    • http://files.jbmarbleandgranite.com/uploads/1/3/2/6/132682230/supesoku_rafipekugosizi_merasagage.pdf
    • http://lopajol.urgroupsingapore.com/uploads/1/3/2/8/132814930/gopiga-wagofuf.pdf
    • http://files.khhcommunications.com/uploads/1/3/0/8/130874065/refafa_barakala_mafijedegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1025/files/80263636833.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/ads_keep_appearing_on_my_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/41758012758.pdf
    • https://cdn.shopify.com/s/files/1/0432/1781/3661/files/law_and_practice_of_international_commercial_arbitration.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/5272503552.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/40240113407.pdf
    • https://cdn.shopify.com/s/files/1/0449/5812/2139/files/basics_of_electrical_and_electronic_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/surfeasy_vpn_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/nawew.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_off00006944.bin
47a03491f6c163bf082123194434996115aaa5162b1ca5a18e9673cd0c31141d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6944 5284 bytes
font_01_sfnt_off00007b2a.bin
5ec214efbdd1e3df2266613a275a2e9d1faea92ff11708fba6aec94857287cd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2A 10312 bytes

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