Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb15f0e5ca57a91…

MALICIOUS

PDF

50.8 KB Created: 2020-07-14 02:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a449b3bd8fc4b11b1310449340380c90 SHA-1: d49db49145696c68550a2c01efc8cb631aec2a77 SHA-256: 2eb15f0e5ca57a9190d494cfe71469c48c10df62e3dcfe86ef74f851b3276acb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of numerous links suggests a social engineering attempt to lure the user to external sites, likely for phishing or malware delivery.

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/wb?keyword=codeword%20barbelon%20danger%20in%20the%20vatican%20pdf
    • http://files.juliewiegand.com/uploads/1/3/1/4/131453480/dd1b72145be5fa.pdf
    • http://files.freelandwalleyefestival.com/uploads/1/3/0/7/130775806/2931511dccbe.pdf
    • http://files.williwisedaycamp.com/uploads/1/3/1/4/131407029/finanepagavedi.pdf
    • http://files.pamsteashoppe.com/uploads/1/3/1/3/131384789/59b03f6f49c09c.pdf
    • http://files.williwisedaycamp.com/upl
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/11206712055.pdf
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/bojitod.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/jodurodinaruzubimumipiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/93775162161.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/10376388838.pdf
    • https://xulijareda.files.wordpress.com/2020/07/29851998939.pdf
    • https://pigijobegoj.files.wordpress.com/2020/07/fosexavenijulifuwipilibuj.pdf
    • https://funofabo.files.wordpress.com/2020/07/meboperitazinupufeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/masolonanaxirigaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/bufedilezavabo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/pegojipuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/semigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/54733610045.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.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_off000084ef.bin
f14f4b2019253c27595f16067696dd5e889b4122317e66d3c985a34421b60fcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EF 5344 bytes
font_01_sfnt_off0000972c.bin
33b79b738adff073681ec30e374481b24e6f9909507e652b84eab95436179bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x972C 10816 bytes

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