Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83ad2128903a93d…

MALICIOUS

PDF

60.8 KB Created: 2020-07-16 04:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ba03aeddbce354be9915451423f792 SHA-1: 5e27650176cf49fbc2bf54c075fd40fee5462408 SHA-256: d83ad2128903a93d8e7f4ffcc6c2e7d8d33e1558ad7020f4f3b94b9f873f74e7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=interview%20questions%20and%20answers%20in%20english%20for%20experienced%20candidates%20pdf'. This indicates a social engineering lure, likely attempting to trick the user into visiting a malicious site by disguising it as relevant content. The file also exhibits characteristics of a link farm, with numerous embedded links, further supporting the malicious intent.

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/wb?keyword=interview%20questions%20and%20answers%20in%20english%20for%20experienced%20candidates%20pdf
    • http://files.1orus.com/uploads/1/3/1/6/131637496/2b530bf9a165.pdf
    • http://files.ncbcda.com/uploads/1/3/2/3/132302816/642ee6e28948.pdf
    • http://files.freewalkingtoursbeirut.com/uploads/1/3/1/4/131437139/mumafinuxoforazutaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/penanupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7894/files/zikubawid.pdf
    • https://nudademexu.files.wordpress.com/2020/07/60854649181.pdf
    • https://patepiborev.files.wordpress.com/2020/07/zevufiruzepavosasukulinul.pdf
    • https://zisagan.files.wordpress.com/2020/06/kozemamus.pdf
    • https://jilijufupe.files.wordpress.com/2020/06/19108155634.pdf
    • https://jifolidudoj.files.wordpress.com/2020/07/numiditadilozipajefaka.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/nurogij.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/tetat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/dokugusoxusigagozivokeku.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3215/files/66458222325.pdf
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/20607597071.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/zatofogedepugevapi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae80.bin
f1815610d3d0d0f42376bb75e39e69d79323e7aa1aeffcc93820619822867bf9
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE80 5580 bytes
font_01_sfnt_off0000c185.bin
6da1b72cdee9aecb31d8e43c31194ae74cc0fca311ca5e14e21982e7048130a3
pdf-font-stream PDF embedded font (sfnt) at offset 0xC185 10340 bytes