PDF malware analysis — malicious · 4e1f29f9b8e80a96

MALICIOUS

PDF

46.8 KB Created: 2020-08-29 08:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8ceab6b721864bae3f2ec9a605c9b12e SHA-1: d0aff58e6d442ad23998c7d5eb8a543091237227 SHA-256: 4e1f29f9b8e80a964353d184f6e0d9c75a046f6cc29e1eb4ee9be1c9de00e67e

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=manual+camara+nikon+d3400'. It also exhibits characteristics of a link farm, with numerous embedded links to various PDF files hosted on Shopify. The presence of a 'download button' heuristic suggests a social engineering lure to trick the user into clicking the malicious link. 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.
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.com/wix?keyword=manual+camara+nikon+d3400
- https://cdn.shopify.com/s/files/1/0447/3287/4901/files/carbon_nanotubes_thesis.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
- https://cdn.shopify.com/s/files/1/0433/7546/0515/files/scaled_agile_framework_4._6.pdf
- https://static.usrfiles.com/ugd/b8c837_43aae4f008354d968d8e0335d3f93909.pdf
- https://static.usrfiles.com/ugd/b8c837_43733c1196504b1db6c4a34a0a534cd8.pdf
- https://static.usrfiles.com/ugd/b8c837_94d27aa776bf44f5a4c7e6f533809d00.pdf
- https://cdn.shopify.com/s/files/1/0431/9304/1053/files/amadeus_choir_formby.pdf
- https://cdn.shopify.com/s/files/1/0433/0127/3758/files/larunezedokap.pdf
- https://cdn.shopify.com/s/files/1/0434/2693/9042/files/makuwokuvizemavelesiz.pdf
- https://cdn.shopify.com/s/files/1/0435/8022/7747/files/26307371321.pdf
- https://cdn.shopify.com/s/files/1/0428/6713/0534/files/free_hindi_movie_online.pdf
- https://cdn.shopify.com/s/files/1/0438/1730/4226/files/carnegie_learning_integrated_math_3_teacher_edition.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_off0000636e.bin` `984aa0ab859fa5b7185feeb59255bfc33f1fe553ef4ab8bd8a90c40f1f9d2c4e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x636E	5052 bytes
`font_01_sfnt_off00007476.bin` `b5dcdb34eb6c6963a32898fd3cfcad6f5c22b2ead889d1b5ca21f4c50c9ff925`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7476	14008 bytes
`font_02_sfnt_off0000a077.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA077	4324 bytes

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