PDF malware analysis — malicious · 4145caaba3eaed9f

MALICIOUS

PDF

46.0 KB Created: 2020-07-28 10:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3a31095962e3243480f65cac77463cb4 SHA-1: 51dc8e2d4532b3fb87c9a743f27780e2fb401d16 SHA-256: 4145caaba3eaed9fb4f76e4bad268a182e0bddcb3c1a4ce268affc7f5be4cc94

128 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a mass external link farm, with many links pointing to Shopify domains hosting other PDFs. One critical heuristic indicates a link to known malicious redirector infrastructure at 'ttraff.ru'. This suggests a phishing or scam attempt, likely to lead the user to download further malware or engage in fraudulent activity. The presence of a 'download button' heuristic reinforces this interpretation.

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=securecrt+free++cnet
- http://files.delavinadesignsco.com/uploads/1/3/0/8/130813448/aac8b0785c43.pdf
- http://files.sujokmalaysia.com/uploads/1/3/0/8/130815093/dofaruw_zufemupegi_siletamer.pdf
- http://files.brandtechnology.com/uploads/1/3/1/8/131856027/1587895.pdf
- https://cdn.shopify.com/s/files/1/0436/0096/9896/files/dakenaboripas.pdf
- https://cdn.shopify.com/s/files/1/0429/4914/8838/files/rabonixedekosubuken.pdf
- https://cdn.shopify.com/s/files/1/0431/5106/5243/files/29458703147.pdf
- https://cdn.shopify.com/s/files/1/0428/3406/7615/files/kixutaxibarogunapuluvoni.pdf
- https://cdn.shopify.com/s/files/1/0429/0091/4343/files/sinubakeriko.pdf
- https://cdn.shopify.com/s/files/1/0432/3291/9720/files/jiwilosivu.pdf
- https://cdn.shopify.com/s/files/1/0430/2195/9325/files/zizabujasuwadapur.pdf
- https://cdn.shopify.com/s/files/1/0427/6856/4380/files/59170583375.pdf
- https://cdn.shopify.com/s/files/1/0430/5348/2135/files/losetofovevepoxu.pdf
- https://cdn.shopify.com/s/files/1/0432/6277/1366/files/nakopavulubuxadumisalal.pdf
- https://cdn.shopify.com/s/files/1/0438/0144/4512/files/lixenowesojaxujuwejuvok.pdf
- https://cdn.shopify.com/s/files/1/0434/7379/7285/files/99416418634.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_off000078c5.bin` `219c2cf49b6e222e48c2d30a09d78395dc9b0fe1606b9641789701a7b735f65a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78C5	4284 bytes
`font_01_sfnt_off00008755.bin` `bddbe33416fd03298cf21137f9505086f2c4f409207c27001b866a2a66e9c290`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8755	10448 bytes

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