Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ce67d575579073…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 12:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7656c6393633cb5417e65e43e210d80b SHA-1: 6ac0d9369d82050f7288fbff5443edbda525d174 SHA-256: 93ce67d5755790733b16e568d552e8ab8c37d437882940f53fa73526804affbf
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to HTML templates and the malicious URL. The primary link, 'https://ttraff.cc/pify?keyword=html+templates+free++for+business', is a redirector that likely leads to a malicious payload or phishing page. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to manipulate search engine results or distribute further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=html+templates+free++for+business
    • http://runajezid.meganwestman.com/uploads/1/3/1/1/131163559/1735189.pdf
    • http://files.bartlettsmath.com/uploads/1/3/0/7/130776268/7875741.pdf
    • http://files.ezrocks.org/uploads/1/3/1/3/131398117/mamazubuvime_bopevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/naniluxokutepewig.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4344/files/60630720348.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/14066687283.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/remuginapogafatuxufulitu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/kagujitewutezaxabobuxede.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/free_xbox_game_codes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9564/files/pawujanotizazowinaviw.pdf
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/princes_of_the_apocalypse_full.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/fundamental_of_mathematical_statistics_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/notalibawewel.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_off00006845.bin
a4824ae8f29a9628908eb8af4e06155abdb26a6701b89b6db88b0b7e427c5d53
pdf-font-stream PDF embedded font (sfnt) at offset 0x6845 5148 bytes
font_01_sfnt_off000079a7.bin
10aa4f115bc323dfff3a53b5f4df295d86dbad1383110f0031c8cdda6fd9b15c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A7 10232 bytes