Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7141f86bcce1ae7…

MALICIOUS

PDF

47.9 KB Created: 2020-08-12 22:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 484c2a857e4e10a205b377321f957603 SHA-1: 6af05fdab37b2fcb4d02b62bd93cdcda470dbc50 SHA-256: c7141f86bcce1ae7e1362a5d5a8fb80f0c23148c3a2fd22f06f1df8073da516f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, disguised with a plausible lure related to sheet music. The document body, though heavily obfuscated, also contains the same malicious URL. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or a method to obscure the ultimate destination. No scripts were extracted from this sample.

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=bridge+over+troubled+water+piano+accompaniment+sheet+music+pdf
    • http://wodamanak.whitehorsevenue.com/uploads/1/3/1/3/131381679/pojapiparuxipikukib.pdf
    • http://files.sarahkernohan.ca/uploads/1/3/0/7/130776033/670705.pdf
    • http://files.alithistlephotography.com/uploads/1/3/0/7/130776757/tusopozegabibatadi.pdf
    • http://files.bahamasbeachhouseforsale.com/uploads/1/3/1/3/131380456/52b3b442.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/69999550212.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/46813639370.pdf
    • https://cdn.shopify.com/s/files/1/0434/2982/2631/files/2_hour_countdown.pdf
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/56426723308.pdf
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/70114462305.pdf
    • https://cdn.shopify.com/s/files/1/0438/1219/2413/files/nirugakoxadexofaniro.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/52435375508.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/5871335040.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/58950921734.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/butterfly_kisses_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/1208/8231/files/mukowejakawujufilepoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/lawodenejobipabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1765/6731/files/approval_addiction_joyce_meyer.pdf
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/lebadadu.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_off00005eac.bin
47f3c9ef8d01a06cb00db4433a5dac34fc21374e584097a2be17c41eeb314905
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 5792 bytes
font_01_sfnt_off0000723b.bin
ec08c8054d6f65dbfc7a13b526e07db474c22b0454a8859472c0be93720e6f52
pdf-font-stream PDF embedded font (sfnt) at offset 0x723B 15080 bytes
font_02_sfnt_off0000a19b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA19B 4324 bytes