Malicious PDF — malware analysis report

Static analysis result for SHA-256 403b343022624ff9…

MALICIOUS

PDF

46.0 KB Created: 2020-08-07 05:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65ddf739f842c0090d37be0dfc3c8da0 SHA-1: 39132ab49a9b050cb6a8e65d3c2550bb9a23451b SHA-256: 403b343022624ff9bc6e5eedeb53c0170b9a80172b35e730ab6e606690bf3366
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'marriage certificate form pdf karnataka' and the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the primary malicious destination. The primary malicious URL is likely used to redirect the user to a secondary payload or phishing site.

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.com/pify?keyword=marriage+certificate+form+pdf+karnataka
    • http://files.redeyedjesus.co.uk/uploads/1/3/0/7/130775921/koxevirobisu-kenimafiw-gulizurunuda-sokeman.pdf
    • http://files.valentinastexmexbbq.com/uploads/1/3/1/4/131437117/votini.pdf
    • http://files.robertekreig.com/uploads/1/3/1/6/131606206/xasumavi_sulejozit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/50956287400.pdf
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/21651392838.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/17923763395.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/tularoxakiketa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/27092690165.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/jupikekazurabubogoxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/lil_wayne_mirror_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/99913346950.pdf
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/29551769571.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/elective_maths_syllabus_for_shs.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/vexirinuwakud.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_off000068fd.bin
723c13b91a1bd044ade1ce14794b5222c82212dc89b7fb94811484f7cb0e5f95
pdf-font-stream PDF embedded font (sfnt) at offset 0x68FD 5120 bytes
font_01_sfnt_off00007a57.bin
db63d714d286653b9e0e318e0171b5877c09b40618e9cf60667c1741144fdb01
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A57 10168 bytes
font_02_sfnt_off00009cf8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF8 4324 bytes