PDF malware analysis — malicious · fe97705671277744

MALICIOUS

PDF

34.9 KB Created: 2020-08-31 13:00:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fa9a5f0d8501a7efba2d40b345a56128 SHA-1: 24b6a9f745edfb87f235e8518faaacabf3e23e9c SHA-256: fe97705671277744b19a8b0985edbac779833e784e41425c0dc8017509cf586c

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to a link farm hosted on static.usrfiles.com. One critical heuristic identified a link to a known malicious redirector at ttraff.cc, which is likely the primary payload delivery mechanism. The presence of a 'download button' heuristic further supports a social engineering lure to trick the user into clicking the malicious link.

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/wix?keyword=anet+a8+cura+setup
- https://static.usrfiles.com/ugd/bdeb4c_395fb32e4f354f3eb0f77465351ee700.pdf
- https://static.usrfiles.com/ugd/41a0b6_24fe242bacaf4e258290b27afb9b8e7c.pdf
- https://static.usrfiles.com/ugd/b42fd6_b6823c6f549b46fdb4615ac4bf8f99ea.pdf
- https://static.usrfiles.com/ugd/b8c837_4263e917e5ab430bbce7e8548f6d2abe.pdf
- https://cdn.shopify.com/s/files/1/0440/3966/7877/files/99666304599.pdf
- https://cdn.shopify.com/s/files/1/0463/0734/4546/files/icloud_mail_manual_setup.pdf
- https://cdn.shopify.com/s/files/1/0431/3926/8765/files/wagokajubamo.pdf
- https://cdn.shopify.com/s/files/1/0435/6436/8021/files/13319501830.pdf
- https://cdn.shopify.com/s/files/1/0434/2333/4565/files/96037117050.pdf
- https://static.usrfiles.com/ugd/b8c837_83f92be164bc406182a4d39472faeb79.pdf
- https://static.usrfiles.com/ugd/cfa91a_8d6c272c7d7b4e268d17f301775f0370.pdf
- https://static.usrfiles.com/ugd/856cea_f2e818b3e3d24628bb1bb6cbeea64a7a.pdf
- https://static.usrfiles.com/ugd/1e32c2_891a2ba97335493f91c0b0ae51e9c15a.pdf
- https://static.usrfiles.com/ugd/0dcf4b_15521ca5cc044ab58bfff9d40a3a0dc9.pdf
- https://cdn.shopify.com/s/files/1/0431/0709/0598/files/insulated_dog_house_plans.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00004b2b.bin` `de0cc8f9e341ba61e202e082ba2ff189d88e220a138a613803b2fedad387ba6c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B2B	5080 bytes
`font_01_sfnt_off00005c7f.bin` `20bb76caf423560d44e0895d7555132350d9d0cd30e07a594f4a1267606d4849`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C7F	10108 bytes

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