Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a1ddbbd4a62a86…

MALICIOUS

PDF

48.9 KB Created: 2020-09-18 14:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f0527a1f84487921160eced9d225b43 SHA-1: faf465ac0b4b563c148c5ca7d0c68d6a827a6841 SHA-256: 44a1ddbbd4a62a86b84d5ecbd311c45400b04b07c8aa18ab246aa735019dac53
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary lure appears to be related to 'dokkan battle mod apk dragon stones', suggesting a scam or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary vector for this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=dokkan+battle+mod+apk+dragon+stones
    • http://files.bonsaireading.co.uk/uploads/1/3/2/8/132814967/2428055.pdf
    • http://rukivawor.radioara.ihotispolis.com/uploads/1/3/1/0/131070705/rubazatewe.pdf
    • http://files.eaglendt.services/uploads/1/3/2/3/132302941/vujegega_kigozus_vemiwasamejore_fenelisuje.pdf
    • https://3f10d824-83d0-4c5a-8ca6-f83dc73149c9.filesusr.com/ugd/7d1dc9_7bd72203e6ed40bbac53fc407d64305a.pdf?index=true
    • https://3f434c57-8b3b-44a6-8fae-340c6640ca5d.filesusr.com/ugd/3615fb_2b81d1190c624c4baf2ec2ba64500af4.pdf?index=true
    • https://57ae3538-17f8-4cac-b268-d23f43551ac6.filesusr.com/ugd/8508de_7b1f6cdb6d47479b948e568d09b704fd.pdf?index=true
    • https://99e6f1ed-fe5b-4727-9c24-88b4bce12b89.filesusr.com/ugd/238140_7166464099374a4e88e27926fea1a5e8.pdf?index=true
    • https://afe1f40c-1a25-4ed0-9bbc-0af4f7e3015e.filesusr.com/ugd/e50c99_a94cf3a96f1c4de6834081f5fa333481.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/2994/5758/files/mad_men_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/acaros_parasitologia.pdf
    • https://cdn.shopify.com/s/files/1/0465/0634/4606/files/zojedirotexinuworomejiwi.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_off00006a37.bin
4e50d1c846a28db1ddd85b9d5cb4238f5dc0614bc324d651283f18a2d053fad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A37 5484 bytes
font_01_sfnt_off00007cc6.bin
9275e9d843654cc4f09cb4dcda71ef82efffc6ff39a3a8303e1a4bf5a9dcabd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10412 bytes
font_02_sfnt_off0000a01b.bin
9461eb7efae7d367e42612ee9e950de81e1c7d013e5627f42604b4d6a6610c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA01B 16444 bytes

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