PDF malware analysis — malicious · 3d0748f8b4a256db

MALICIOUS

PDF

38.1 KB Created: 2020-09-01 03:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: db962fc89e0fe31d982853f383fa1d87 SHA-1: c3f71b3fd4d6b98637e717f49370ff5b7ffbe980 SHA-256: 3d0748f8b4a256dbcbb0325feb0a11f5c7a1cd15a0218b4c1f5e281948a0e0cc

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a financial report. This heuristic, combined with the ML classifier's high confidence, strongly suggests a phishing or social engineering attack. The document body, though heavily obfuscated, contains the malicious URL and references to external PDF files, indicating a link farm strategy to distribute malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=antipodes+global+fund+monthly+report
- https://static.usrfiles.com/ugd/b8c837_107871a511b54473afb38051ef128d10.pdf
- https://static.usrfiles.com/ugd/b8c837_fe4d156699cb4103ae10e8fb5e5bc39a.pdf
- https://static.usrfiles.com/ugd/c345b0_15f23557c8b64626b5ac52c34f415bac.pdf
- https://static.usrfiles.com/ugd/b8c837_e3eed76385524d2680b120440fff8d88.pdf
- https://static.usrfiles.com/ugd/9e53d4_2b2ca92c65f8411da2d1f9399bd91c5a.pdf
- https://static.usrfiles.com/ugd/3b0c81_ed9e0f6d062643e4a0f2b09d72ba3442.pdf
- https://static.usrfiles.com/ugd/2ac701_51633b608af841199e02ac65c85d764a.pdf
- https://static.usrfiles.com/ugd/b8c837_83a6177815bb45f1bf535570ea7ac4f8.pdf
- https://static.usrfiles.com/ugd/b8c837_3f1b2fc291d84aa599e22554a97cf840.pdf
- https://static.usrfiles.com/ugd/5e8de6_81ec30bb2754471e8162738eef7c6c48.pdf
- https://static.usrfiles.com/ugd/b8c837_1c88fd91eb284196bf4a88e69f2587c6.pdf
- https://static.usrfiles.com/ugd/a43ec6_1ce93375335346b68e235486d79ff148.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_off00004970.bin` `06612d297aa201c1407aa156cdf54cce590c600cc449cf9fa7a82d6e6db4d7bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4970	5688 bytes
`font_01_sfnt_off00005ca9.bin` `c7bee7734ee9f8b19e9aad5faef7ad107845008c6674af5b8e81819705958b87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CA9	14940 bytes

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