Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b547099c1a97d1c…

MALICIOUS

PDF

51.1 KB Created: 2020-08-30 16:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bf69a64ea3f33a483574b3bee6fb9b4 SHA-1: 0b17220bdbc03ac9c853afe2e54033360b51f3f7 SHA-256: 8b547099c1a97d1c4d9adf4b62937229e3162d09ac2596b0d91547e0a79773d7
128 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 download for a game. It also functions as a link farm, pointing to numerous other PDFs hosted on various domains. The primary malicious URL is ttraff.cc, which is known to host redirectors. The document body and embedded links suggest a social engineering lure to trick users into downloading potentially malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=attack+on+titan+tribute+game+downloa
    • https://static.usrfiles.com/ugd/4c1554_3a5d308d09cf4c738bf02a193c5aad81.pdf
    • https://static.usrfiles.com/ugd/67e251_2d71286882f94ea08105d63635a06c83.pdf
    • https://static.usrfiles.com/ugd/39cb9d_b9fee877920e4a7aa7d5cba4e1d0678c.pdf
    • https://static.usrfiles.com/ugd/b8c837_06205787d8f742418bc3961336617df3.pdf
    • https://static.usrfiles.com/ugd/74a852_6066a24957964c2b91b2e0b7d61a1fe7.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/dipimipularuwuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/78834340012.pdf
    • https://cdn.shopify.com/s/files/1/0438/4070/0578/files/mivojunoguxaviriguzasuxom.pdf
    • https://cdn.shopify.com/s/files/1/0431/7488/7573/files/emphatic_structures_cleft_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/9371444033.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/the_magic_number_7.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/bloons_tower_defense_3_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/12795795532.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_off000088c8.bin
376ebd9afe0a1c193d6904e5e8bc4097b40ae6e8cb9dbfe475d557481c05ffa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C8 5368 bytes
font_01_sfnt_off00009afb.bin
8f5546e78f6002a3258eea825b1e6e96eaa7d7dddd9124e0349aeb10ef67686d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFB 10864 bytes

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