Malicious PDF — malware analysis report

Static analysis result for SHA-256 a47d563a1c34d203…

MALICIOUS

PDF

104.0 KB Created: 2020-09-15 07:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5c077c01222d8b3413cedf607a7d859 SHA-1: 3a9bb7262fc2a947466871db9b37838e57193bf6 SHA-256: a47d563a1c34d203679431efc9f9f8e30453c512877b4adecccdfed1cf681b55
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wb?keyword=stick%20figure%20rpg%202%20director's%20cut'. This indicates the document's primary purpose is to trick the user into visiting a malicious URL. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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.com/wb?keyword=stick%20figure%20rpg%202%20director
    • https://static.usrfiles.com/ugd/0c8cc8_b33e92c08f4944a39844d0c544223cb2.pdf
    • https://static.usrfiles.com/ugd/868401_a636fed660824d8e9b2522ffb40418c1.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_f967b4cb690f4634b94963385cd605cd.pdf
    • https://static.usrfiles.com/ugd/7198c1_8620089b9a3d448fa4a37c6c0a07ad62.pdf
    • https://cdn.shopify.com/s/files/1/0438/8818/1400/files/bulave_tujhe_ringtone_female_version.pdf
    • https://cdn.shopify.com/s/files/1/0434/1163/6381/files/8421798788.pdf
    • https://static.usrfiles.com/ugd/76de1a_214c2fdfaeeb4f0dabab1e8f420c4324.pdf
    • https://static.usrfiles.com/ugd/6a7407_3e946fbab7b64caf84a723e1b56d2918.pdf
    • https://static.usrfiles.com/ugd/622218_78277129cc744e96bc876253afab74e8.pdf
    • https://static.usrfiles.com/ugd/289c5e_81adc951112e4b2c8c295024745c0889.pdf
    • https://static.usrfiles.com/ugd/f103bb_ceb8f402d1db4e33a313bf9d70d8f3d7.pdf
    • https://static.usrfiles.com/ugd/d4c4cf_d7fc58bc8f6e469aa5d8644388694b2c.pdf
    • https://static.usrfiles.com/ugd/10b11f_651b6cb4d5be4245869dc76f5f19b27b.pdf
    • https://static.usrfiles.com/ugd/36d413_5d98eb33658a48e38cb7f89b16c3b655.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_off00015782.bin
4921a1fec6d22c986822f01c9fd22881d19755919e611013e3cfb84144c6f8ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15782 5416 bytes
font_01_sfnt_off00016a15.bin
de8c2b2a963804da28057fd72e85b633e602a9c44df9883985d3dd50993bbcab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A15 12244 bytes

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