Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab897b809dd7636…

MALICIOUS

PDF

49.9 KB Created: 2020-08-25 09:38:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74a4b5c4d4371b1fb229f8e3fd549078 SHA-1: 0886485707826f2fcd01d05f31f14f93c40e94a6 SHA-256: 8ab897b809dd763660a59af2caa7d2fbc33d0fee25210822a49145445199d342
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=academic+writing+course+syllabus+pdf'. This indicates an attempt to redirect the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are benign Shopify URLs but include suspicious ones like 'http://jemajuzu.martinhartfilms.com/uploads/1/3/1/6/131606490/8436683.pdf'. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing 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.cc/pify?keyword=academic+writing+course+syllabus+pdf
    • http://jemajuzu.martinhartfilms.com/uploads/1/3/1/6/131606490/8436683.pdf
    • http://files.chuckboudreau.com/uploads/1/3/2/6/132681443/2761717.pdf
    • https://cdn.shopify.com/s/files/1/0434/1003/0759/files/church_management_information_system_articles.pdf
    • https://cdn.shopify.com/s/files/1/0433/8568/4124/files/aaha_kalyanam_songs_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/driver_etc_hosts.pdf
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/english_grammar_for_class_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/adobe_audition_for_pc_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/rigusokexavixoruteb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/jivisena.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/98195147618.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/compendium_of_the_catechism_of_the_catholic_church.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_off0000742b.bin
a531087138a424feb3eca2322201627779dd36f73b28310e6d127811884d6657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 5680 bytes
font_01_sfnt_off0000876e.bin
790b4f8c1d05950ef2dfca154c7078a18d40476390ec0f10355a61e2a26e6750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 10972 bytes
font_02_sfnt_off0000acb5.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACB5 4324 bytes

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