PDF malware analysis — malicious · aa173e9113a46362

MALICIOUS

PDF

73.8 KB Created: 2020-08-28 19:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bff77d4041484a6c1792b24cc38f1e33 SHA-1: 40ee3deec28649c0e2d193be51e33f0e75b5b50e SHA-256: aa173e9113a463625009ca0874969c4f6f42a776777388b07b15dc7715b30a70

160 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 pointing to 'ttraff.com', which is also listed as an IOC. The document also exhibits characteristics of an advance-fee scam lure, suggesting a phishing or fraudulent intent. The presence of numerous external PDF links, many hosted on 'static.usrfiles.com', indicates a link farm designed to improve search engine ranking for the malicious lure. 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.
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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.com/wix?keyword=cold+mountain+full+book+pdf
- https://static.usrfiles.com/ugd/b8c837_3747a899bcf04340a272ee1d411db89a.pdf
- https://static.usrfiles.com/ugd/b8c837_9606e8de32fc4678b6a6a434a3988853.pdf
- https://static.usrfiles.com/ugd/b8c837_ca6fec6fff4a4f048527095210d21361.pdf
- https://static.usrfiles.com/ugd/b8c837_d81b9089030945d886ddd7c35c0b34d2.pdf
- https://static.usrfiles.com/ugd/b8c837_b5f0a7616f2c4122a05a0dc4150c0a8c.pdf
- https://cdn.shopify.com/s/files/1/0428/7345/4748/files/design_patterns_in_c_metsker.pdf
- https://static.usrfiles.com/ugd/b8c837_63c0b9f2540f43eb8908bfb08b4540fe.pdf
- https://static.usrfiles.com/ugd/b8c837_66982b67d4c2464abc877d2469cd7e2e.pdf
- https://static.usrfiles.com/ugd/b8c837_1aac5195d7cf4d69be7c52fdcdba263f.pdf
- https://static.usrfiles.com/ugd/b8c837_59e7076e87374505bc6151c15849b6e4.pdf
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/rubemipeveginaboxilowo.pdf
- https://cdn.shopify.com/s/files/1/0430/9067/3813/files/decimal_to_fraction_practice_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0436/5352/9753/files/best_android_portable_phone_charger.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_off0000e6dd.bin` `542f73067cd302f00b7424690ca0fa31544f80f4bdd3b114a76ddf54f3aecabe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6DD	5020 bytes
`font_01_sfnt_off0000f7de.bin` `37bf6499062b4875e01ab0901c3c764b4e3837f83c4c630db15a3e69b855a525`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7DE	10076 bytes

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