Malicious PDF — malware analysis report

Static analysis result for SHA-256 83a9d34602148a29…

MALICIOUS

PDF

63.8 KB Created: 2020-08-06 18:08:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b205e91d5b754dc54d86c47417f2fef SHA-1: 276081e5bc1412cd7a520b72faadeed6441fcb22 SHA-256: 83a9d34602148a299314f2c906214ec2817ff314c33b9fd60cfd6f62cc8108bc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link `https://ttraff.ru/pify?keyword=analytic+geometry+ellipse+problems+with+solutions+pdf` is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites. No scripts were extracted, but the PDF structure and embedded URLs indicate a social engineering attempt to lure users to potentially harmful content.

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/pify?keyword=analytic+geometry+ellipse+problems+with+solutions+pdf
    • http://files.lavishsalonharrisburg.com/uploads/1/3/0/8/130874317/wimunipefasibisagaw.pdf
    • http://files.stlawrencedistrictmedicalcentre.com/uploads/1/3/1/4/131454549/gozesutovaji_xiroduwatinexad_kumamojiwere_lalodebe.pdf
    • http://files.stylebysooph.com/uploads/1/3/2/3/132303068/makunixaro_rireruzoribawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/71926721494.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/28341185510.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/muponiboxajasiper.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/16246332285.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/podegazir.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/43095507986.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/zigewitusu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/ariana_grande_focus_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/nulowikezadifutugufelev.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_off0000a3eb.bin
dc1b9f4dbbf2bdb3a878b0a802469b8eeb0112083ec00a09d09b5e9fb347cfac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EB 5772 bytes
font_01_sfnt_off0000b76c.bin
9559812cf1671cee39751a34ad208ea998ebd3c4c508700339942e34c177af28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB76C 13800 bytes
font_02_sfnt_off0000e3e1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E1 4324 bytes

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