Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea13c02cf350588…

MALICIOUS

PDF

46.4 KB Created: 2020-08-01 06:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07126b676d0d912afb891aaac343c6ee SHA-1: a959fcf8d81f2c813c2c2089fc7b4198e578cd0e SHA-256: 8ea13c02cf3505881a63a16c812add167153d1088782e27417403041d10ec589
150 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 one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.cc/pify?keyword=logic+welcome+to+forever', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a campaign to lure users to malicious sites. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=logic+welcome+to+forever
    • http://files.villaandreja.com/uploads/1/3/0/7/130775304/212c9181a370d.pdf
    • http://files.homerindex.com/uploads/1/3/1/4/131408153/nitefosed-surovudof-xulumepapaxu.pdf
    • http://files.electronicrepairegypt.com/uploads/1/3/1/4/131410479/larejamejoxugosixux.pdf
    • http://files.egvbikes.org/uploads/1/3/1/0/131069987/zejipuvujivox-weribu-kixekem-mufuvudep.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/vetevetamanefubekan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/rupibomejerizikatoxisum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/jetonurepure.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/28868430451.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/5052430349.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/gunojiraminazek.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/58162804663.pdf
    • https://cdn.shopify.com/s/files/1/0437/1628/0475/files/6251971912.pdf
    • https://cdn.shopify.com/s/files/1/0432/3541/0077/files/nidezoros.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/82546661181.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51098187394.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/dekiguleduk.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/vurokovevakasome.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_off00006b70.bin
fa5defe5d5a1f77ffad06660b9ec4ab91cb09383194d0d1daa7d70b3c53bb03f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B70 4588 bytes
font_01_sfnt_off00007b27.bin
825a85df6db5f26f8d05a86267cb429af8692897195c0c618d69420e14bd11ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B27 10496 bytes
font_02_sfnt_off00009ecd.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECD 4324 bytes