Malicious PDF — malware analysis report

Static analysis result for SHA-256 f18c55193bb4be5e…

MALICIOUS

PDF

44.6 KB Created: 2020-07-30 23:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9422060ab724ae3ca5cb35f6dd08505 SHA-1: 11601437385b8fab4c5cc6c84607314152c3170a SHA-256: f18c55193bb4be5eff78a989976d3076525656327c3397143804d835ebb1e22c
130 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a redirector link and a link farm. The embedded URL points to a redirector service, which is a common technique for delivering malicious payloads. The presence of a visual download button further supports the lure aspect of the attack. No scripts were extracted, limiting the analysis of the payload delivery mechanism.

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.cc/pify?keyword=anodea+judith+libros+pdf
    • http://files.uniqueintheuae.com/uploads/1/3/1/4/131453605/1866900.pdf
    • http://files.michiganeastapts.com/uploads/1/3/1/8/131857565/natuf-zulov-xavedusiru.pdf
    • http://files.ballfamilyqt.com/uploads/1/3/1/6/131606280/sitevotukurejo_ramimirunaja.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/27991186227.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/76968011793.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/24772277173.pdf
    • https://cdn.shopify.com/s/files/1/0436/0388/6238/files/17976328587.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/mofatasavamajoxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/43612352452.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/18231466506.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/kodedewujoletakelozasur.pdf
    • https://cdn.shopify.com/s/files/1/0436/7794/1913/files/84704800023.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/gerolegudedotunene.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_off00006ff6.bin
1d536a1fe8f60d24cfad7e67eade6c67b51455cfe3e148278a5e460a33229d38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5216 bytes
font_01_sfnt_off000081a7.bin
6c8870d512130a7d471746c8771d2861e90df90b59a81a8bfb155572683301ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 10616 bytes

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