PDF malware analysis — malicious · d59cd2bb6f466575

MALICIOUS

PDF

45.0 KB Created: 2020-09-06 05:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: df2d3888016b8343f2a2da78d3c537fd SHA-1: 9bd56ce5be786ec942dc731b4ffbd651bcd73c17 SHA-256: d59cd2bb6f4665759a7aeaefc2f4d74d93a67bf81afdd01fe25b36b15042afec

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body suggests a lure related to legal documents, likely to trick users into clicking the malicious links. The primary malicious IOC is the ttraff.link redirector, which is known to host 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.link/wix?keyword=affidavit+of+service+format+nclt
- https://cdn.shopify.com/s/files/1/0431/2609/6036/files/velinepezup.pdf
- https://cdn.shopify.com/s/files/1/0431/2625/9876/files/59550210490.pdf
- https://cdn.shopify.com/s/files/1/0430/7920/5013/files/62195139824.pdf
- https://cdn.shopify.com/s/files/1/0431/6132/1634/files/kojivojebuvodubakogadupe.pdf
- https://cdn.shopify.com/s/files/1/0437/0835/0615/files/alliteration_vs_assonance_worksheet.pdf
- https://static.usrfiles.com/ugd/b148e5_be74ea5a25ae4b97ba6dfcefa9690c0c.pdf
- https://static.usrfiles.com/ugd/baa514_fe30825410374d73ab40f7ce4589f342.pdf
- https://static.usrfiles.com/ugd/b8c837_464caf8764254d4f9b7d54c1c6813de3.pdf
- https://static.usrfiles.com/ugd/374ce0_511c0115218945e798d5456537e22b2d.pdf
- https://static.usrfiles.com/ugd/e1a791_ffe57e2e400144eea6b3c1a66eefb175.pdf
- https://static.usrfiles.com/ugd/b8c837_202350c6c4b54632af88f8da9d74f51a.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000673f.bin` `e2951588078918cd4f377aad35d2749cd0b0f20abd386a93eaff0b3684265e14`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x673F	5004 bytes
`font_01_sfnt_off00007823.bin` `261977d342f7a5a7da9f452c9160080af663226a55da018e773acd398cd36628`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7823	9728 bytes
`font_02_sfnt_off00009968.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9968	4324 bytes

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