Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e9a56dadd34aae…

MALICIOUS

PDF

53.0 KB Created: 2020-08-17 02:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9509661a09e78336bd61ff894122e1 SHA-1: 7e60e3ecb8d2cfa34ee915f5bd28a6d8d0798e28 SHA-256: 24e9a56dadd34aaea54af3934962e28797c9c75216e09ec187bb34c88f42a9c0
150 Risk Score

Malware Insights

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

The PDF file 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, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ashari+aqeedah+pdf', which is flagged as a malicious redirector. This suggests the primary purpose of the PDF is to lure users to malicious sites.

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.com/pify?keyword=ashari+aqeedah+pdf
    • http://files.labradoodledelightsoflot16.com/uploads/1/3/0/7/130776855/wiremidorejis.pdf
    • http://files.bluebonnetchapter.com/uploads/1/3/2/7/132710627/wajapirit_fivowigisidawab.pdf
    • http://files.mayerwaterdistrict.com/uploads/1/3/1/3/131383377/2364581.pdf
    • http://files.nowwwriters.ca/uploads/1/3/1/8/131856757/resunifoke.pdf
    • http://files.liveatparkerhill.com/uploads/1/3/1/6/131637136/kuxojibadopo_bedijubizu_wopopezes_pomopigim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74808095599.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/86244252613.pdf
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/wagezososeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/faxetapibifetixoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/62327644440.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0422/files/ralomifanijew.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/puvojeg.pdf
    • https://cdn.shopify.com/s/files/1/0448/0414/5309/files/hernia_hiatal_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/xeduzekapobiwatuvafo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8097/3477/files/the_rocking_horse_winner_discussion_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/6901/3158/files/shockwave_marble_mania.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_off000075c7.bin
09fdfe35b55f308e28513f503d24ef242f0174c0ee4e4a2114e6dc19331b0672
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C7 5212 bytes
font_01_sfnt_off00008775.bin
1e2d14a1a63957cd7e50e83d6f7f02f6bd7d91a6cc3157ab78a54d06f1b2bd9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8775 11232 bytes
font_02_sfnt_off0000ad0d.bin
2549e70cff39a8b79be25f8762f12e808c8e3592073489deea7eb90bbd43fd7b
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD0D 17436 bytes