Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68043d4b8c34c14…

MALICIOUS

PDF

73.4 KB Created: 2020-09-06 21:06:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1dfdf82c4c0cf55be1e9515cb3073f8d SHA-1: b15240d3b743dd7311ff4ce54c8a2db863fd1502 SHA-256: c68043d4b8c34c14cce8631a099522075aec90e0c70dd5109c1a8ee160e014ef
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'carprofen safety data sheet'. This URL redirects to a known malicious domain. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute further 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.link/wix?keyword=carprofen+safety+data+sheet
    • https://static.usrfiles.com/ugd/03ae60_85a9ab3084a248a6abaca80326464b95.pdf
    • https://static.usrfiles.com/ugd/78daac_72b3b483479c47adb6df2728f13baa3f.pdf
    • https://static.usrfiles.com/ugd/804ff6_727fb0467bd0460f924eb669cacedbeb.pdf
    • https://static.usrfiles.com/ugd/2994dd_e20485925a374dd2801c0504725c43aa.pdf
    • https://static.usrfiles.com/ugd/d5415a_34056f18e5584454b8f76c32e19d82b3.pdf
    • https://static.usrfiles.com/ugd/429b25_af17a0b2df30459e84e2cd05e99b3738.pdf
    • https://static.usrfiles.com/ugd/af0aa9_0ef986c5de8843078bce5053846f0f11.pdf
    • https://static.usrfiles.com/ugd/eed56f_ae678497730e41db84d1410e3ce2e390.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/nixuditegiluxekef.pdf
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/92408071058.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/54320955976.pdf
    • https://cdn.shopify.com/s/files/1/0434/0570/5374/files/24484311116.pdf
    • https://static.usrfiles.com/ugd/6203b9_e550b05cc58d448bbd5d1c728621b08a.pdf
    • https://static.usrfiles.com/ugd/e73fea_86395489ec1148109c1577779aaf7c8e.pdf
    • https://static.usrfiles.com/ugd/f967ac_28cff77ac3284464874c473118788861.pdf
    • https://static.usrfiles.com/ugd/c836c3_f1e66eba8825412e8b08bd05021440b0.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_off0000cca1.bin
e1051b3776acb52ef4e89f6e005288b6fc899bb82e2bad8c75dd8ae91435a844
pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA1 5104 bytes
font_01_sfnt_off0000ddfc.bin
0022ad9420fa28cd106829ac3f0b3c2b2028832f5603b81dab8ccdd6ee6cb2bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFC 10740 bytes
font_02_sfnt_off000102d5.bin
2fbb528c30fae61c70ff4082faa5fece981988df10abad1a91cab371b780b9de
pdf-font-stream PDF embedded font (sfnt) at offset 0x102D5 16192 bytes