Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5502d783f176da4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 02:17:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bd6e9c1d7660766c9d9c2918df5a573 SHA-1: ff2ae295a861c9a991398ae58216f545001f5704 SHA-256: b5502d783f176da4a977c097948a6ca38c821bb2a53e5ca292029e157e525bcd
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body and extracted URLs confirm a lure related to 'minecraft apk download'. The primary malicious IOC is the redirector URL, which likely leads to the delivery of a malicious payload disguised as a game download.

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/wix?keyword=minecraft+apk+download+v1.11.4.2+free
    • https://static.usrfiles.com/ugd/b8c837_0c071499630f4da8a037e399882d5f86.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4a197002e1a48ee833a6cc440b77a39.pdf
    • https://static.usrfiles.com/ugd/5de1df_20b89bde05c441f184e1bc71bfa73aee.pdf
    • https://static.usrfiles.com/ugd/2ac701_685a1b4559ff47cd9847015a9de54f8f.pdf
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/bhagwan_all_song.pdf
    • https://cdn.shopify.com/s/files/1/0448/5634/4737/files/ba_anthropology_study_material.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/nawotajitezibefuvowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/gisudosilutotugiguves.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/sexaso.pdf
    • https://static.usrfiles.com/ugd/b8c837_a79fbc4fff6349d8a55de628fba08f0e.pdf
    • https://static.usrfiles.com/ugd/576447_237151f1fcfd4856a2ee865e53299331.pdf
    • https://static.usrfiles.com/ugd/b8c837_a181f8b601a3464ba56d0a95cf35dc29.pdf
    • https://static.usrfiles.com/ugd/b8c837_48ec684d3f1248b9b2c7d97761c96360.pdf
    • https://static.usrfiles.com/ugd/b8c837_1845900f8f6c4f749ea740a21fd36569.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_off000066f0.bin
022f5973bf8e42df8b810b0c1f365027b0bbfd45e85076b9314e9eac409de03f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 5496 bytes
font_01_sfnt_off000079d9.bin
5e300bb9339aae32fcf35ee543c0fa2ede391c27fb5c50549e2e9615233a8f1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79D9 10180 bytes

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