Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b66fee3edebab1d…

MALICIOUS

PDF

46.8 KB Created: 2020-08-10 00:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 235b78b7702f6bc1eb3a860a51703e4b SHA-1: af5ecf5da777b759424e53f36222e28d6b22c9fa SHA-256: 9b66fee3edebab1dc40c0b41292c1fae9320a2664a99b69c4ccf3dada1f4178e
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. The 'SE_MFA_LURE' heuristic indicates the document is designed to harvest credentials or MFA codes, likely by redirecting the user to a phishing page via the malicious link. 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=the+nine+abdominal+regions+pdf
    • http://zikapejo.smhs1988reunion.com/uploads/1/3/1/3/131398455/181445.pdf
    • http://files.yathuhospice.org/uploads/1/3/1/4/131407796/6032474.pdf
    • http://files.llenise.com/uploads/1/3/0/7/130775309/vogiji.pdf
    • http://doxoriv.mrmyrtuesclassroom.com/uploads/1/3/1/4/131438079/4937887.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/bumapukejefibivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6378/8188/files/67980501513.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/kotisuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/kerikuxutosomoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/72997823906.pdf
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/83289300565.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0047/files/xebolovuxefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/joxerovuwitazixifuka.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/59068889896.pdf
    • https://cdn.shopify.com/s/files/1/0431/4831/2738/files/between_two_worlds_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/jelakatogejukuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/7538/7043/files/management_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/6312/9765/files/12930256249.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_off000072ad.bin
a733fc0fd00bdfaf5db2ebbb8da921b1f5cca7fa8db9225335e270c17a4ca02a
pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 5544 bytes
font_01_sfnt_off00008550.bin
25691c9c10ef94ae1d23ee0f2d9cf29c1d7fb023989f19d73f683633748fe5dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8550 12976 bytes