Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fa69e8835a404a…

MALICIOUS

PDF

53.0 KB Created: 2020-08-14 03:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62ea854f2bc58c5b876d7b4b78ba346a SHA-1: d0f68234f73654d636100c240ea6264a1a27a706 SHA-256: b7fa69e8835a404a1626f90764c92e353b458764a1d83e65f3a4849f734e0490
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=anatomia+quirurgica+cuello+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. 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=anatomia+quirurgica+cuello+pdf
    • http://files.designed2stick.com/uploads/1/3/0/8/130813796/nitaxitefiwo_vekejamoweguw_bufujiripiwiz.pdf
    • http://files.barcelonasailingcharter.com/uploads/1/3/1/6/131637606/13ce8e33.pdf
    • http://files.jarrodvanderryken.com.au/uploads/1/3/0/7/130776073/4288296.pdf
    • http://tezevopa.battlebeyondearth.com/uploads/1/3/2/6/132696414/fedovunun_mowipi.pdf
    • http://files.jmn-i.com/uploads/1/3/1/3/131381881/58fed6a07f5.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/discord_not_detecting_mic.pdf
    • https://cdn.shopify.com/s/files/1/0437/2093/3528/files/synthes_humeral_nail.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/razor_claw_pixelmon.pdf
    • https://cdn.shopify.com/s/files/1/0437/5019/5354/files/70998986534.pdf
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/xevafezexuvorijan.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8059/files/retabizadebuduwilitanis.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/labobopidaluzekotori.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2916/files/3921776316.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/murotedofavefobademafamom.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/84299646237.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/16043382386.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007838.bin
a90f79d35b855d6e419c922e1c16a7f20c875ed03b3e5f8d6d8c2638309ac592
pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 1604 bytes
font_01_sfnt_off0000805b.bin
53e95792db980b7ad0277c8ac72965853aa2d37833e5a3519d7bcfef40fc5657
pdf-font-stream PDF embedded font (sfnt) at offset 0x805B 5292 bytes
font_02_sfnt_off00009233.bin
b04ce2cdcbd317dac010cd5d6e0b7ec56db4d633ba38b85ab6d6e94c8590ff95
pdf-font-stream PDF embedded font (sfnt) at offset 0x9233 11360 bytes
font_03_sfnt_off0000b6e0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E0 4324 bytes