Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f1fd136494109f…

MALICIOUS

PDF

43.8 KB Created: 2020-09-06 02:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b69ce3da1a27202b4bde91338afcedf SHA-1: ebb8f9d0544624a92d06232f32e4c67f87e48655 SHA-256: 84f1fd136494109f89e727e897be444f0a36173c0df680dae2cd40460da3c9f2
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.club/pify?keyword=canticle+of+the+turning+sheet+music', is designed to lure users to malicious infrastructure. The PDF also contains a large number of links to Shopify, likely an attempt to blend in with legitimate content or for SEO poisoning. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of a phishing or redirection attack.

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.club/pify?keyword=canticle+of+the+turning+sheet+music
    • https://cdn.shopify.com/s/files/1/0439/4768/8091/files/airac_1903_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/online_application_form_fergusson_college_pune.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/70163021698.pdf
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/pokilefefovozobabix.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/periodic_table_trends_activity_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/patient_consent_form_for_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/kiposevowanibido.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/catering_business_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0435/6997/1363/files/maths_textbook_for_class_7.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/button_mushroom_cultivation_in_tamil.pdf
    • https://static.usrfiles.com/ugd/bb3bf9_070c6c8f7b75469d82632e4da44e140c.pdf
    • https://static.usrfiles.com/ugd/c068f8_6464f387aa20420d8c413915f3a204bd.pdf
    • https://static.usrfiles.com/ugd/868401_3cc9ba7243be4593a7b010bdd528e03b.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb993aec78354c05bc22b84878ffdd64.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_off0000524c.bin
e48e3023599f750877add989ca5667c9674cf6a04060939879f9ddbe2097c3ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x524C 5200 bytes
font_01_sfnt_off000063d0.bin
49835c30c340abc53d40a86268425d7c0cdc3c63e4c8e0e919e861c1617a6642
pdf-font-stream PDF embedded font (sfnt) at offset 0x63D0 14872 bytes
font_02_sfnt_off00009268.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9268 4324 bytes