Malicious PDF — malware analysis report

Static analysis result for SHA-256 9853a0299b4dc2b2…

MALICIOUS

PDF

54.7 KB Created: 2020-09-17 10:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75652957eb2a184de298a7ab68eb0468 SHA-1: 37b1f5e08bb68c63750bace045e714907c59c79a SHA-256: 9853a0299b4dc2b27a8cff3d0704cee349d349db7937696fc60fe80685b61a17
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure, specifically 'https://ttraff.me/wix?keyword=guild+of+ravnica+draft+guide'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution, under the guise of a 'draft guide'. No scripts were extracted, and the document body was heavily obfuscated, but the presence of numerous external links and the malicious redirector are strong indicators of malicious intent.

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=guild+of+ravnica+draft+guide
    • http://files.fncookies.com/uploads/1/3/1/4/131453698/vetukopag-xelukosuje.pdf
    • http://files.bighornmountaincrawlers.com/uploads/1/3/2/6/132682802/rirekuzevetaso-vanatufosu-jeten-libajidalodew.pdf
    • http://files.irmafrijlink.nl/uploads/1/3/0/9/130969428/bibijapa.pdf
    • http://tamofe.fivelevelsconsulting.com/uploads/1/3/2/6/132683014/piduxupenugug_niluluzar.pdf
    • http://files.rockinghamcountyncdems.com/uploads/1/3/0/7/130775808/9c652990b750.pdf
    • http://files.trffoodshelf.org/uploads/1/3/1/8/131871642/kigemudevurora.pdf
    • https://cdn.shopify.com/s/files/1/0428/6090/4615/files/mosaremedakipuluvadapeded.pdf
    • https://cdn.shopify.com/s/files/1/0476/7691/5878/files/kuvepebewatabalevipanatem.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/5433177665.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6861/files/never_back_down_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/malaysia_visa_application_form_for_bangladesh.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_off00009a32.bin
cd6455d902427c8ec92cd3b748fd4ea805ccfa55c96af036d091dae7c9fb8827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A32 5104 bytes
font_01_sfnt_off0000abab.bin
17265e9309309698afdd0216523fabab9f95b36677bf50bd4ef5cd78e48f54c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABAB 10188 bytes

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