Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a52170edadf4715…

MALICIOUS

PDF

40.7 KB Created: 2020-08-23 20:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0302ddca9f750a92ef3dcb7a433fd5d SHA-1: 7dcd25067d48d969f45d6755afe983b82941324c SHA-256: 8a52170edadf4715f01488476ba4660bf219c4c62bb6d6eac2fbe8ca5358de57
130 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'aplikasi ad blocker android terbaik'. The file also exhibits characteristics of a link farm, with numerous embedded links pointing to various PDF documents, many hosted on Shopify. The presence of a malicious redirector link suggests an attempt to lead the user to a malicious site or download. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aplikasi+ad+blocker+android+terbaik
    • http://files.coloradocomfortinspections.com/uploads/1/3/1/4/131453348/fixizamazu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1537/9880/files/handing_in_your_tenancy_notice_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/age_problems.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0471/files/building_planning_and_drawing_by_rangwala.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/kenmore_dishwasher_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/panutusekasikebinewin.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8782/files/cell_culture_methods.pdf
    • https://cdn.shopify.com/s/files/1/0464/0918/7496/files/duwaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7528/files/abertura_piriforme_nariz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9170/files/6066777186.pdf
    • https://cdn.shopify.com/s/files/1/0434/9712/8088/files/25737284286.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4823/files/abandoned_bride_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/psychiatric_interview_template.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_off0000625d.bin
de1c5dad443fb27153cc35f410b91848471ef511721c4d452a5d4c308be70856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 5260 bytes
font_01_sfnt_off00007434.bin
736106e4deca7ec56c911b121c8aa7fa50ec745ac5fb621022ac2ad528f66b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 9980 bytes

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