Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b95e87dcf58495d…

MALICIOUS

PDF

35.0 KB Created: 2020-08-18 13:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d2cbcd15293eb73e38731a53295ba94 SHA-1: 5c09ccf08ec299c618791b5d6aa273b9fe882b8d SHA-256: 8b95e87dcf58495d9e5fed053bf89921c267c38f531c1c884c7315781606b11e
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as sheet music. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation to increase visibility. The document body contains obfuscated text and a URL that matches the malicious redirector found in the heuristics.

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=carrie+underwood+blown+away+sheet+music
    • http://wadez.dawntrygstad.com/uploads/1/3/1/0/131070993/fezores-xotefixaz-pexekaxagazow-zizuxadape.pdf
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/free_apron_sewing_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0431/0571/4338/files/ielts_speaking_topics_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0535/3889/files/reprendre_confiance_en_soi_livre.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/42178927748.pdf
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/casio_privia_px_330_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/levodetolaledoxiliwofewuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/7949/7896/files/bugzilla_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/59504079305.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/dipitolimurijenizeji.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6604/files/65256095652.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/39173612866.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/fapoxivuke.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_off000049b2.bin
e479bf00088c242bc4bc2f1ed0fe30d048c5b8d9d2b40cea76ca5c164e9cf666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B2 5420 bytes
font_01_sfnt_off00005c00.bin
e76c87a5ce0e107f05d334830ce10f3e5bdd9e7b0d87684937ce1e63885945f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C00 10376 bytes

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