Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4960d88db42602…

MALICIOUS

PDF

49.3 KB Created: 2020-08-06 04:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80b0b354ac697118bc48e3eeac7436f8 SHA-1: e68773ac439f7c5ff8bf71af37b298fd0990a23c SHA-256: 3c4960d88db426022567a3a2e9fd7f87604692047a07a12f6635ae04abb324a4
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=catalogo+natura+ciclo+18+2020+pdf. The document body, though heavily obfuscated, contains references to the same catalog lure and the malicious URL, reinforcing the phishing attempt. No scripts were extracted, limiting the analysis of direct payload execution.

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=catalogo+natura+ciclo+18+2020+pdf
    • http://topud.professional-tourguides.com/uploads/1/3/0/7/130738779/1450747.pdf
    • http://files.alcorstudios.com/uploads/1/3/0/7/130739704/jotiruvog.pdf
    • http://files.kileykellermeyer.com/uploads/1/3/1/4/131453753/2190707.pdf
    • http://files.champsfleuris.com/uploads/1/3/0/7/130775145/5398304.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/13022156057.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/mufomupakalutazelumom.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/tuwopatanegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2168/files/84178613757.pdf
    • https://cdn.shopify.com/s/files/1/0439/3749/7243/files/zolabumaripa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/69525457595.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5686/files/96840314712.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/ata_2020_thyroid_cancer_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/0699/2289/files/psychological_testing_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/90910151872.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/ballroom_blitz_tab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/esl_podcast.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7108/files/45636926838.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_off00006223.bin
fa1eed34c29679654dd7399ee79a6c75339908ff7a09e4e95b1026970fedf86a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6223 5568 bytes
font_01_sfnt_off00007524.bin
b68d0d6b4227b299cf185aa61b43d2826528b53d4c495ac5562ea61f2cc31868
pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 14808 bytes
font_02_sfnt_off0000a230.bin
21d2c517cc0d2781f643886744ab2248bbe8d92ed1ab736cc2ad748918d5c6f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA230 16296 bytes