PDF malware analysis — malicious · 989ad26c41d03a5a

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 05:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 771afe2405a98e3dcfcc4c2c53721890 SHA-1: e4d3a45d387aa97ef5e20f74bc216660c353e685 SHA-256: 989ad26c41d03a5abf58c04310f0e8365c0c945885adca00e68a72b1d24ec493

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm and a specific redirector URL that points to malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Quantitative data analysis methods pdf' and the malicious URL, suggesting a lure to download a malicious file. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the primary redirector.

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.ru/pify?keyword=quantitative+data+analysis+methods+pdf
- http://files.wisewomangardening.org/uploads/1/3/1/4/131406520/54ee1eaaec074.pdf
- http://files.ziawaste.com/uploads/1/3/0/9/130969489/vuxiror.pdf
- http://files.tribalexperiences.com/uploads/1/3/0/7/130738921/lavurogelebug_piduzi_lesuje.pdf
- http://files.soulastro.com/uploads/1/3/1/6/131606901/6276169.pdf
- https://cdn.shopify.com/s/files/1/0428/8220/3801/files/biwejaw.pdf
- https://cdn.shopify.com/s/files/1/0431/1734/6976/files/31150201397.pdf
- https://cdn.shopify.com/s/files/1/0431/8081/8581/files/sesovujopitilid.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdf
- https://cdn.shopify.com/s/files/1/0434/2795/4853/files/48124815367.pdf
- https://cdn.shopify.com/s/files/1/0438/4332/2016/files/92155332004.pdf
- https://cdn.shopify.com/s/files/1/0432/0460/8155/files/butifalewikofozi.pdf
- https://cdn.shopify.com/s/files/1/0428/2780/8935/files/sekinerike.pdf
- https://cdn.shopify.com/s/files/1/0431/9805/4558/files/tonovexena.pdf
- https://cdn.shopify.com/s/files/1/0435/7190/4673/files/28789988363.pdf
- https://cdn.shopify.com/s/files/1/0436/5670/8254/files/84363747476.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_off00006474.bin` `267127de29b3cd85466cdcf76a5d74457ff4229f544bad7d6fe41eafe950fb98`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6474	5408 bytes
`font_01_sfnt_off000076c5.bin` `7079c7451c45b93dee887549bf8c8ccec681e25391aa8363f3a43be498c9daff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76C5	10296 bytes

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