Malicious PDF — malware analysis report

Static analysis result for SHA-256 7611b4bcfa8cde56…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 00:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6209b91bc46cc4a63a14b24a15a7dd8f SHA-1: 3b9cbef7d2bf2b539da944499198055b7d048e58 SHA-256: 7611b4bcfa8cde560e2cf2c16ce525137e86e0239b3686062b60cc0a604a55a2
120 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, identified as a PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=ejemplos+de+fuentes+terciarias+yahoo', is flagged as a known malicious redirector. The document body is heavily obfuscated but contains references to the redirector URL and other PDF links hosted on cdn.shopify.com. This suggests a campaign focused on SEO manipulation or distributing malicious content through a network of linked PDFs.

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/wix?keyword=ejemplos+de+fuentes+terciarias+yahoo
    • https://cdn.shopify.com/s/files/1/0438/2271/0941/files/turizi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/dufasivegijajur.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3557/files/39689528061.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/samalibuwajisuvakuzoxuku.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb2dab041f91476bbe2e1167e20a9945.pdf
    • https://static.usrfiles.com/ugd/8127dd_a3b2386ea76d4b0b9ccc1e258663dd2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d36efc66e1ff4671935da6f60229f0b9.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/busofego.pdf
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/video_maker_app_for_android_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7746/files/64918243591.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_6b578214b3124810aa625ec93f362fbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f2ba7c7dd6148fb955195fcd3266268.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/1/0434/5734/7746/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e8.bin
b2d9559d3480c521fcfc07100446e7498c3f92880150af445b5e4b84d99d529e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 5532 bytes
font_01_sfnt_off0000789b.bin
0e2c16d647b433cf7712ba26f80e421407431127d5dd113a4a61b71635688a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 11512 bytes

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