Malicious PDF — malware analysis report

Static analysis result for SHA-256 51ed54d23baab842…

MALICIOUS

PDF

45.5 KB Created: 2020-07-09 16:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 493483be5459f92ab6d103ba3afd39ae SHA-1: 250508ac5f9e0acfc2b9d8f8f687e8468dc13edb SHA-256: 51ed54d23baab842f0339a8991f428dd985399738ab789f8472b86af7cc61ed9
120 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, indicating a link farm or redirection strategy. The primary URL, https://ttraff.ru/wb?keyword=el%20zancudo%20vegetariano%20pdf, is identified as a malicious redirector. This suggests the document's purpose is to direct users to potentially harmful websites, likely for phishing or malware distribution.

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.ru/wb?keyword=el%20zancudo%20vegetariano%20pdf
    • http://files.techniquejobs.com/uploads/1/3/1/4/131406816/2390231.pdf
    • http://files.compassionatewellnessoc.com/uploads/1/3/1/3/131383982/3941590.pdf
    • http://files.traditionalmagic.com/uploads/1/3/0/9/130969758/jonapefori-bevikafoxitu.pdf
    • http://files.artandroulla.com/uploads/1/3/1/3/131380773/6e51b943ebb202b.pdf
    • http://files.cecilyeiferle.com/uploads/1/3/0/7/130776850/somakiwino.pdf
    • http://files.haralsoncountyhistory.com/uploads/1/3/2/3/132302913/4438840.pdf
    • http://files.lgbtmalaysia.com/uploads/1/3/1/4/131454436/fedawowijetub-turopugifez-lalejugikixoku.pdf
    • http://files.batrssocal.com/uploads/1/3/1/3/131384789/vipibifoxoteroxu.pdf
    • http://files.thomaslemonart.com/uploads/1/3/1/4/131483361/1361573.pdf
    • http://files.carolynbridgetkennedy.com/uploads/1/3/0/9/130969895/4264360.pdf
    • http://files.eastsidefoodforthought.com/uploads/1/3/1/6/131606819/4873996.pdf
    • https://wamikebevos.files.wordpress.com/2020/07/78709206532.pdf
    • https://nilalazage.files.wordpress.com/2020/07/lideraribekibuje.pdf
    • https://nogekidopof.files.wordpress.com/2020/07/88449938172.pdf
    • https://kewiwil.files.wordpress.com/2020/07/9649210520.pdf
    • https://wonaxij.files.wordpress.com/2020/06/17717675555.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62222626122.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovogosiwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23631451812.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/
    • https://cdn.shopify.com/s/files/1/0428/9

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724c.bin
30af73aab02600dfc1b5416115e10bd25dddb5b58a34822c75ec4fe8302c4d0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 5092 bytes
font_01_sfnt_off000083b9.bin
5e658440d936d362c6b1588cc0a69cd35110e29b206a5d50409c6340eb7f136f
pdf-font-stream PDF embedded font (sfnt) at offset 0x83B9 10956 bytes