Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c50237238db1cd…

MALICIOUS

PDF

42.3 KB Created: 2020-08-25 10:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84fdff2d7d924024ce37a859daba106c SHA-1: 215d6f444b8a2daa70984aaa537d1ab87d204298 SHA-256: b1c50237238db1cde0fcc332b0dae10fb98320e4a3f94d90afe189d92f56cb77
120 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a lure for a game mod. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. The document body, though heavily obfuscated, contains text referencing 'Boom beach v 38. 108 mod apk' and the malicious URL, reinforcing the lure. The PDF also contains a link farm, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to distribute malicious content widely.

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.cc/pify?keyword=boom+beach+v+38.+108+mod+apk
    • http://files.scfcommunity.org/uploads/1/3/0/8/130814923/rexikofovita_senakenav_dalen.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/osaka_train_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/4306/9845/files/ledivudijaxuvexex.pdf
    • https://cdn.shopify.com/s/files/1/0434/8647/8489/files/fundamentos_de_cero_defectos.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/bdl_exam_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/4305/1937/files/37815498751.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/javofuwudeganukeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/sasinesuzubuwumivofatud.pdf
    • https://cdn.shopify.com/s/files/1/0437/6913/5262/files/atkins_physical_chemistry_9th_edition.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_off000059d3.bin
a8f5cece3ef250e861693d03186a2f6eb3de5c1375c06435ac9819199b666709		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D3 5456 bytes
font_01_sfnt_off00006c63.bin
9af1eae45e299dc26431d82d6cfa89f37181a836fc19246882e21fac4232ea9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C63 10092 bytes
font_02_sfnt_off00008eec.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEC 4324 bytes

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