PDF malware analysis — malicious · b2b5a531bf292863

MALICIOUS

PDF

59.7 KB Created: 2020-08-09 18:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fed1af8241416886bbfed7b81b8f4b9c SHA-1: e8015b5c2e9be7d68bbf99643507c803dde8123d SHA-256: b2b5a531bf29286358816b3816ed3a88f402060b674d3c3ccc86832a655f3cca

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. Another critical heuristic identifies a large number of external PDF links, suggesting an SEO link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=al+amyloidosis+pdf, which is likely used to redirect users to further malicious content. The document body appears to be largely obfuscated or corrupted, but the presence of the URL and the link farm heuristics strongly indicate a malicious redirection or phishing attempt.

Heuristics 3

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.
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=al+amyloidosis+pdf
- http://xumogo.iccspa2020.com/uploads/1/3/2/3/132302782/purefuzafepeni-fizugozu-nuzazuluveton.pdf
- http://files.miniaturecupcakes.com/uploads/1/3/2/6/132695575/5509567.pdf
- http://files.stringbeancrafts.com/uploads/1/3/1/0/131070754/fekadefupisiraro.pdf
- https://cdn.shopify.com/s/files/1/0429/8155/6375/files/febit.pdf
- https://cdn.shopify.com/s/files/1/0431/0096/2977/files/luxeruwiv.pdf
- https://cdn.shopify.com/s/files/1/0429/0553/4620/files/gurubaxipug.pdf
- https://cdn.shopify.com/s/files/1/0437/6153/3082/files/vabagi.pdf
- https://cdn.shopify.com/s/files/1/0432/1627/3563/files/tanubib.pdf
- https://cdn.shopify.com/s/files/1/0434/0813/0213/files/catch_up_growth_pediatrics.pdf
- https://cdn.shopify.com/s/files/1/0431/0922/0501/files/34488852674.pdf
- https://cdn.shopify.com/s/files/1/0440/8508/4310/files/rearrange_pages_adobe_acrobat_pro.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
- https://cdn.shopify.com/s/files/1/0437/3315/6001/files/biogas_plant_design_for_home.pdf
- https://cdn.shopify.com/s/files/1/0430/4257/0402/files/21425786644.pdf
- https://cdn.shopify.com/s/files/1/0437/2201/4870/files/tipigid.pdf
- https://cdn.shopify.com/s/files/1/0434/3123/1638/files/giravovesagufoluberu.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_off0000abf0.bin` `ae86e062905036a545b43ab7204ca0ca3f0b0bb98c39e02fa25c362c233ee3c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xABF0	5184 bytes
`font_01_sfnt_off0000bd93.bin` `bff815a74338ea928c43db5c7c3dd26a6e8a0ca174b68f93fd0547c5da277487`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBD93	10592 bytes

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