Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4ab836d5b21c6bd…

MALICIOUS

PDF

56.6 KB Created: 2020-09-09 12:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8832baad4fcb7f2df0ed4e041e93ed7c SHA-1: fcb684fcd7a1f779d07ba17f764378c0288c1508 SHA-256: b4ab836d5b21c6bd2529411e41a45e5a2c4283da68fbeb494b8c95cf92b595a5
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are SEO-optimized and point to benign content, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to 'uptet online application form 2019 last date' and the malicious redirector URL. This suggests a phishing or scam attempt using a link farm to obscure the malicious destination.

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.link/wix?keyword=uptet+online+application+form+2019+last+date
    • https://cdn.shopify.com/s/files/1/0440/4333/7878/files/fokapubepuzisetogiminex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/62816320802.pdf
    • https://cdn.shopify.com/s/files/1/0430/9785/0010/files/campana_sobre_campana_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/29237558878.pdf
    • https://static.usrfiles.com/ugd/d54300_24c681743bf441758f7f1e8f4e8f97c2.pdf
    • https://static.usrfiles.com/ugd/87d215_de86427a39a54a90a11daa3c19cbf4c4.pdf
    • https://static.usrfiles.com/ugd/f09a9d_b9bcf7b940ad453eb4c0cf5e8dd9c4c1.pdf
    • https://static.usrfiles.com/ugd/136d07_88c9d9c08b2848ca8df5b0daaf68b297.pdf
    • https://static.usrfiles.com/ugd/ac51ce_f98fe7b8d2c647a28877d21ec180c478.pdf
    • https://static.usrfiles.com/ugd/c836c3_a6ee2d3d79894b8f8e1200059cbbaa99.pdf
    • https://static.usrfiles.com/ugd/0df15e_9674b8c4e4dd4b1a88285b508dc17948.pdf
    • https://static.usrfiles.com/ugd/c836c3_8615839ba2a74fc98ce11c50f5776b3b.pdf
    • https://static.usrfiles.com/ugd/f80014_198a1b1695e04a9eb34938c0900a462b.pdf
    • https://static.usrfiles.com/ugd/61804c_29111de7de234262a0ce8cac1c2c1d9e.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008bbb.bin
b8518612163e051652c1e8c6f816e9d61b12ce8c009fd3304af9f771f96e4930		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBB 5772 bytes
font_01_sfnt_off00009f53.bin
a6a766fc473d81de3a5a10a66bbdb7ad568b73cd846b73e890755f7126ec44a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F53 10820 bytes
font_02_sfnt_off0000c446.bin
9fd82ee90ad2fff4339bcb36e2faaea792f80860695f714961fcbb485526ed1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC446 4472 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.