Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd846efa675078d0…

MALICIOUS

PDF

58.4 KB Created: 2020-08-14 04:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e5353f30e787c7bd2dfe349201d6231 SHA-1: 58dadbefb27d07da0a2a1b19f8c34c80076dbba4 SHA-256: cd846efa675078d08b232f43874a4082a65172e209ed8dd3e5743717149346ce
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a link farm. One of these links, https://ttraff.cc/pify?keyword=school+days+punjabi+song+video, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect the user to malicious content. No scripts were extracted from this sample.

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=school+days+punjabi+song+video
    • http://files.facedesignplasticsurgery.com/uploads/1/3/1/4/131452880/27dd04a9d6c242.pdf
    • http://wofofox.lightmagicus.com/uploads/1/3/2/6/132681352/nasujaxejon-kubivesetit-zukababavawemam-buvewab.pdf
    • http://zejiforat.fyiexpress.com/uploads/1/3/1/6/131637814/jukat_lowopilemuruseb_rugajari.pdf
    • http://files.burrow.nyc/uploads/1/3/0/9/130969654/21204d2a8e2a4.pdf
    • http://wozan.thepalmerlawfirm.com/uploads/1/3/1/8/131856158/49a63b558c632.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5772/files/pedemonomijudunol.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8865/files/5551660682.pdf
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/chemical_principles_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/jolixejowozuladazigedef.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/samokotubivulekosowedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/avast_antivirus_license_key_free_2038.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/chicago_traffic_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
    • https://cdn.shopify.com/s/files/1/0439/1885/2264/files/88100610639.pdf
    • https://cdn.shopify.com/s/files/1/0436/7951/4777/files/python_turtle_curved_line.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/69927006861.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_off000089a3.bin
9d2f79d5a1a2cfefb1934461d1e41b94125deacf1c1f5fac578bd1fc413bac59
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A3 5720 bytes
font_01_sfnt_off00009d19.bin
dc4ce03dfcd6ea107b22c839adf108ba00b882d0ffbecf4e8fd20f62d69341c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D19 11000 bytes
font_02_sfnt_off0000c30b.bin
e3e61e2546b24f8f6e6a47dcb942f019bc8b49a1cec4f369b06933574d68084a
pdf-font-stream PDF embedded font (sfnt) at offset 0xC30B 7656 bytes