PDF malware analysis — malicious · ec1afcab25bbee83

MALICIOUS

PDF

44.4 KB Created: 2020-08-19 18:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9fd74e929a2709a55a4f5e5a918a8c75 SHA-1: 136ceeb645dfcc73fdbf4051447fda6b70dd1584 SHA-256: ec1afcab25bbee830e58fd008d9c2864249aa3a780e1e27289a32e057842842b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.001 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=barium+enema+radiology+pdf'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external PDF links, with 'https://cdn.shopify.com/s/files/1/0432/6916/1110/files/17724176773.pdf' being a prominent example. The document also contains a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running malicious code. The combination of these factors strongly suggests a phishing or malware delivery attempt.

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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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=barium+enema+radiology+pdf
- http://files.claudiascritters.com/uploads/1/3/0/8/130873795/3367270.pdf
- http://kozuzuno.bzdickstudio.com/uploads/1/3/1/3/131379730/kabub.pdf
- https://cdn.shopify.com/s/files/1/0432/6916/1110/files/17724176773.pdf
- https://cdn.shopify.com/s/files/1/0434/0921/1557/files/91060691094.pdf
- https://cdn.shopify.com/s/files/1/0432/8341/5204/files/79561610765.pdf
- https://cdn.shopify.com/s/files/1/0432/8495/5300/files/novileg.pdf
- https://cdn.shopify.com/s/files/1/0428/1001/5910/files/bekhayali_mein_bhi_tera_kala_ringtone.pdf
- https://cdn.shopify.com/s/files/1/0429/1523/3948/files/whistleblower_complaint_copy.pdf
- https://cdn.shopify.com/s/files/1/0429/5488/3231/files/61994712455.pdf
- https://cdn.shopify.com/s/files/1/0430/0803/2922/files/aflac_short_term_disability_forms.pdf
- https://cdn.shopify.com/s/files/1/0437/8935/3118/files/13745554369.pdf
- https://cdn.shopify.com/s/files/1/0432/7853/2758/files/moxitil.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/
- https://cdn.shopify.com/s/files/1/0428/1001/5910/files/bekhayali_mein_bhi_tera_kala_ring

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007164.bin` `e19ac8e0589a2619861407d3f813de9876028ececf882e7c130caee59415793f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7164	5332 bytes
`font_01_sfnt_off0000837c.bin` `a6172a4b1605686faef2aa2bc296e55d6b76c078cf233951cbf4d8dc4d7c98ef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x837C	9756 bytes

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